-
Elimination Method For Solving Systems of Linear Equations Using Addition and Multiplication, Algebr
This algebra 2 video tutorial explains how to use the elimination method for solving systems of linear equations using addition and multiplication. It provides plenty of examples of solving linear equations with 2 variables and 3 variables.
Systems of Linear Equations - 2 Variables:
https://www.youtube.com/watch?v=oKqtgz2eo-Y
Systems of Equations - Fractions & Decimals:
https://www.youtube.com/watch?v=jlddJQ1qYDU
One Solution, No Solution or Many Solutions?
https://www.youtube.com/watch?v=bq5gDsEdN3Q
Systems of Equations - Substitution Method:
https://www.youtube.com/watch?v=cblHUeq3bkE
Solving Systems of Equations By Graphing:
https://www.youtube.com/watch?v=Pd4hwS8qHms
________________________________________
Systems of Linear Equations - 3 Variables:
http...
published: 03 May 2017
-
Method of Elimination Steps to Solve Simultaneous Equations
Steps to use method of elimination to solve simultaneous equations
published: 28 Mar 2017
-
Using Elimination to Solve Systems
👉Learn how to solve a system (of equations) by elimination. A system of equations is a set of equations which are collectively satisfied by one solution of the variables. The elimination method of solving a system of equations involves making the coefficient of one of the variables to be equal in all the equations that make up the system, in order to eliminate the variable using subtraction (or addition as the case may be). The coefficients can be made equal by multiplying the entire equation with a number which when multiplied to the coefficient of the variable to be eliminated gives the LCM of the coefficients of the variable to be eliminated in all the equations. Then we solve for the remaining variable(s).
After we have obtained the solution{s} for the remaining variable(s), we subst...
published: 01 Oct 2012
-
Solving Systems of Equations By Elimination & Substitution With 2 Variables
This algebra video tutorial explains how to solve systems of equations by elimination and how to solve systems of equations by substitution with 2 variables.
Systems of Linear Equations - 2 Variables: https://www.youtube.com/watch?v=oKqtgz2eo-Y
Systems of Equations - Fractions & Decimals:
https://www.youtube.com/watch?v=jlddJQ1qYDU
One Solution, No Solution or Many Solutions?
https://www.youtube.com/watch?v=bq5gDsEdN3Q
Systems of Equations - Substitution Method:
https://www.youtube.com/watch?v=cblHUeq3bkE
Solving Systems of Equations By Graphing:
https://www.youtube.com/watch?v=Pd4hwS8qHms
________________________________________
Systems of Linear Equations - 3 Variables:
https://www.youtube.com/watch?v=0JQeo0yC9OQ
Systems of Equations - Word Problems: ...
published: 17 Jan 2018
-
GCSE Maths - How to Solve Simultaneous Equations - Using the Elimination Technique
This video covers how to use the elimination technique to solve simultaneous equations.
This video is suitable for maths courses around the world.
KS3 - All on your course
GCSE Foundation - All on your course
GCSE Higher - All on your course
A-level - All on your course
Maths Playlist:
https://www.youtube.com/playlist?list=PLidqqIGKox7XPh1QacLRiKto_UlnRIEVh
GCSE Chemistry playlist:
https://www.youtube.com/watch?v=fN8kH9Vvqo0&list=PLidqqIGKox7WeOKVGHxcd69kKqtwrKl8W
GCSE Biology Playlist:
https://www.youtube.com/watch?v=--dIBinUdeU&list=PLidqqIGKox7X5UFT-expKIuR-i-BN3Q1g
GCSE Physics Playlist:
https://www.youtube.com/watch?v=aHVJfRxeAxo&list=PLidqqIGKox7UVC-8WC9djoeBzwxPeXph7
published: 16 Jan 2022
-
Solving systems of equations by elimination | Algebra Basics | Khan Academy
Courses on Khan Academy are always 100% free. Start practicing—and saving your progress—now: https://www.khanacademy.org/math/algebra-home/alg-system-of-equations/alg-equivalent-systems-of-equations/v/solving-systems-of-equations-by-elimination
Solving Systems of Equations by Elimination. Created by Sal Khan.
Watch the next lesson: https://www.khanacademy.org/math/algebra-basics/core-algebra-systems/core-algebra-systems-tutorial/v/solving-systems-of-equations-by-multiplication?utm_source=YT&utm_medium=Desc&utm_campaign=algebrabasics
Missed the previous lesson? https://www.khanacademy.org/math/algebra-basics/core-algebra-systems/core-algebra-systems-tutorial/v/solving-linear-systems-by-substitution?utm_source=YT&utm_medium=Desc&utm_campaign=algebrabasics
Algebra basics on Khan Academy: ...
published: 08 Apr 2010
-
Solving Systems of Equations... Elimination Method (NancyPi)
MIT grad shows how to use the elimination method to solve a system of linear equations (aka. simultaneous equations). To skip ahead: 1) For a BASIC example where terms cancel right away when you add the equations, skip to 0:25. 2) For an example in which you have to MULTIPLY ONE EQUATION by a number before adding the equations, skip to time 6:26. 3) For an example in which you have to MULTIPLY BOTH EQUATIONS by numbers before adding, skip to 12:12. P.S.) For HOW TO SUBTRACT equations instead of adding them, if you'd rather do that, skip to 18:00. Nancy formerly of MathBFF explains the steps.
Follow me on Instagram! https://instagram.com/mathnancy
Follow me on Twitter: https://twitter.com/nancypi
For how to solve a system of linear equations by the SUBSTITUTION METHOD, jump to: https://yo...
published: 16 May 2018
-
Elimination Method | Simultaneous Equations
In this video we look at how to solve simultaneous equations by elimination. I hope you find this video on solving simultaneous equations using the elimination method helpful. If you have any questions about the math, just put them in the comments.
published: 23 Jun 2020
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Solving Systems of Equations Elimination Method
Learn how to Solve Systems of equations by Elimination in this free Math Video Tutorial by Mario's Math Tutoring.
0:23 Example 1 Solve the System 5x-y=7, x + 4y = 14
1:56 Example 2 Solve the System x + 2y = 6, -3x - 6y = 4 (No Solution)
2:54 Example 3 Solve 2x - y = 5, -4x + 2y = -10 (Infinite Solutions)
3:48 Example 4 Solve 2x + 3y = -1, 5x + 4y = 1
Related Videos:
Solving Systems of Equations Using Substitution Method
https://youtu.be/yOixEPlWXuo
Solving Systems of Equations by Graphing
https://youtu.be/We-5wufwkxg
Learn Algebra 1 Lesson by Lesson in my "Learn Algebra 1" video course for sale. 87 Lessons teaching you step by step Algebra 1. Check out the 13 free lessons(1 from each chapter)
https://mariosmathtutoring.teachable.com/p/learn-algebra-1-video-course
Looking to rais...
published: 19 Feb 2016
-
Solving System of Linear Equations by Elimination/ Addition Method
This video will demonstrate how to solve system of linear equations by elimination method.
#SolvingSystemofLinearEquations
#SolvingSystemofLinearEquationsbyElimination Method
#Elimination Method
#Addition Method
#Math Teacher Gon
#Math Made Easy
published: 22 Nov 2020
10:21
Elimination Method For Solving Systems of Linear Equations Using Addition and Multiplication, Algebr
This algebra 2 video tutorial explains how to use the elimination method for solving systems of linear equations using addition and multiplication. It provides...
This algebra 2 video tutorial explains how to use the elimination method for solving systems of linear equations using addition and multiplication. It provides plenty of examples of solving linear equations with 2 variables and 3 variables.
Systems of Linear Equations - 2 Variables:
https://www.youtube.com/watch?v=oKqtgz2eo-Y
Systems of Equations - Fractions & Decimals:
https://www.youtube.com/watch?v=jlddJQ1qYDU
One Solution, No Solution or Many Solutions?
https://www.youtube.com/watch?v=bq5gDsEdN3Q
Systems of Equations - Substitution Method:
https://www.youtube.com/watch?v=cblHUeq3bkE
Solving Systems of Equations By Graphing:
https://www.youtube.com/watch?v=Pd4hwS8qHms
________________________________________
Systems of Linear Equations - 3 Variables:
https://www.youtube.com/watch?v=0JQeo0yC9OQ
Systems of Equations - Word Problems:
https://www.youtube.com/watch?v=YgtidDkjJ9M
Systems of Quadratic Equations:
https://www.youtube.com/watch?v=rq5AjFs95qw
Systems of Nonlinear Equations:
https://www.youtube.com/watch?v=JPdLEaxlnZQ
________________________________________
Final Exams and Video Playlists:
https://www.video-tutor.net/
Full-Length Videos and Worksheets:
https://www.patreon.com/MathScienceTutor/collections
https://wn.com/Elimination_Method_For_Solving_Systems_Of_Linear_Equations_Using_Addition_And_Multiplication,_Algebr
This algebra 2 video tutorial explains how to use the elimination method for solving systems of linear equations using addition and multiplication. It provides plenty of examples of solving linear equations with 2 variables and 3 variables.
Systems of Linear Equations - 2 Variables:
https://www.youtube.com/watch?v=oKqtgz2eo-Y
Systems of Equations - Fractions & Decimals:
https://www.youtube.com/watch?v=jlddJQ1qYDU
One Solution, No Solution or Many Solutions?
https://www.youtube.com/watch?v=bq5gDsEdN3Q
Systems of Equations - Substitution Method:
https://www.youtube.com/watch?v=cblHUeq3bkE
Solving Systems of Equations By Graphing:
https://www.youtube.com/watch?v=Pd4hwS8qHms
________________________________________
Systems of Linear Equations - 3 Variables:
https://www.youtube.com/watch?v=0JQeo0yC9OQ
Systems of Equations - Word Problems:
https://www.youtube.com/watch?v=YgtidDkjJ9M
Systems of Quadratic Equations:
https://www.youtube.com/watch?v=rq5AjFs95qw
Systems of Nonlinear Equations:
https://www.youtube.com/watch?v=JPdLEaxlnZQ
________________________________________
Final Exams and Video Playlists:
https://www.video-tutor.net/
Full-Length Videos and Worksheets:
https://www.patreon.com/MathScienceTutor/collections
- published: 03 May 2017
- views: 1240696
9:22
Using Elimination to Solve Systems
👉Learn how to solve a system (of equations) by elimination. A system of equations is a set of equations which are collectively satisfied by one solution of the ...
👉Learn how to solve a system (of equations) by elimination. A system of equations is a set of equations which are collectively satisfied by one solution of the variables. The elimination method of solving a system of equations involves making the coefficient of one of the variables to be equal in all the equations that make up the system, in order to eliminate the variable using subtraction (or addition as the case may be). The coefficients can be made equal by multiplying the entire equation with a number which when multiplied to the coefficient of the variable to be eliminated gives the LCM of the coefficients of the variable to be eliminated in all the equations. Then we solve for the remaining variable(s).
After we have obtained the solution{s} for the remaining variable(s), we substitute the obtained solution into any of the original equations to obtain the solution of the eliminated variable.
👏SUBSCRIBE to my channel here: https://www.youtube.com/user/mrbrianmclogan?sub_confirmation=1
❤️Support my channel by becoming a member: https://www.youtube.com/channel/UCQv3dpUXUWvDFQarHrS5P9A/join
🙋♂️Have questions? Ask here: https://forms.gle/dfR9HbCu6qpWbJdo7
🎉Upcoming Livestreams: https://www.youtube.com/user/MrBrianMcLogan/community
Organized Videos:
✅Solve a System of Equations Algebraically
https://www.youtube.com/playlist?list=PL0G-Nd0V5ZMq2Oa36RF7hW0Zz86wC4Krt
✅Solve a System of Equations Using Substitution | Easy
https://www.youtube.com/playlist?list=PL0G-Nd0V5ZMrGE-w4_gFa2fTsQqsm2Wax
✅Solve a System of Equations Using Substitution | Hard
https://www.youtube.com/playlist?list=PL0G-Nd0V5ZMqdqpDChzcP4XOAMohu-lyS
✅Solve a System of Equations Using Substitution | Learn About
https://www.youtube.com/playlist?list=PL0G-Nd0V5ZMqp6_1IonPYJ3DbKPVy11v5
✅Solve a System of Equations Using Elimination | Learn About
https://www.youtube.com/playlist?list=PL0G-Nd0V5ZMr0MOQzwEe8nrQGfOQnpwd
✅Solve a System of Equations Using Elimination | Easy
https://www.youtube.com/playlist?list=PL0G-Nd0V5ZMolnC3-PMHsnsR6MDtGKdgM
✅Solve a System of Equations Using Elimination | Medium
https://www.youtube.com/playlist?list=PL0G-Nd0V5ZMo4pWWVhqwpndkqj2gi58_P
✅Solve a System of Equations Using Elimination | Hard
https://www.youtube.com/playlist?list=PL0G-Nd0V5ZMr9vwB_4rGYne9YdfIULcxm
✅Solve a System of Equations Word Problem
https://www.youtube.com/playlist?list=PL0G-Nd0V5ZMr7bMMmNPXW26XO-pJrf1Z-
✅Solve a System of Equations With Three Variables
https://www.youtube.com/playlist?list=PL0G-Nd0V5ZMpJiU75Ns76Ys7KQjELrzm9
🗂️ Organized playlists by classes here: https://www.youtube.com/user/MrBrianMcLogan/playlists
🌐 My Website - http://www.freemathvideos.com
Connect with me:
⚡️Facebook - https://www.facebook.com/freemathvideos
⚡️Instagram - https://www.instagram.com/brianmclogan/
⚡️Twitter - https://twitter.com/mrbrianmclogan
⚡️Linkedin - https://www.linkedin.com/in/brian-mclogan-16b43623/
👨🏫 Current Courses on Udemy: https://www.udemy.com/user/brianmclogan2/
👨👩👧👧 About Me: I make short, to-the-point online math tutorials. I struggled with math growing up and have been able to use those experiences to help students improve in math through practical applications and tips. Find more here: https://www.freemathvideos.com/about-me/
#Systemofequations #Algebraically #brianmclogan
https://wn.com/Using_Elimination_To_Solve_Systems
👉Learn how to solve a system (of equations) by elimination. A system of equations is a set of equations which are collectively satisfied by one solution of the variables. The elimination method of solving a system of equations involves making the coefficient of one of the variables to be equal in all the equations that make up the system, in order to eliminate the variable using subtraction (or addition as the case may be). The coefficients can be made equal by multiplying the entire equation with a number which when multiplied to the coefficient of the variable to be eliminated gives the LCM of the coefficients of the variable to be eliminated in all the equations. Then we solve for the remaining variable(s).
After we have obtained the solution{s} for the remaining variable(s), we substitute the obtained solution into any of the original equations to obtain the solution of the eliminated variable.
👏SUBSCRIBE to my channel here: https://www.youtube.com/user/mrbrianmclogan?sub_confirmation=1
❤️Support my channel by becoming a member: https://www.youtube.com/channel/UCQv3dpUXUWvDFQarHrS5P9A/join
🙋♂️Have questions? Ask here: https://forms.gle/dfR9HbCu6qpWbJdo7
🎉Upcoming Livestreams: https://www.youtube.com/user/MrBrianMcLogan/community
Organized Videos:
✅Solve a System of Equations Algebraically
https://www.youtube.com/playlist?list=PL0G-Nd0V5ZMq2Oa36RF7hW0Zz86wC4Krt
✅Solve a System of Equations Using Substitution | Easy
https://www.youtube.com/playlist?list=PL0G-Nd0V5ZMrGE-w4_gFa2fTsQqsm2Wax
✅Solve a System of Equations Using Substitution | Hard
https://www.youtube.com/playlist?list=PL0G-Nd0V5ZMqdqpDChzcP4XOAMohu-lyS
✅Solve a System of Equations Using Substitution | Learn About
https://www.youtube.com/playlist?list=PL0G-Nd0V5ZMqp6_1IonPYJ3DbKPVy11v5
✅Solve a System of Equations Using Elimination | Learn About
https://www.youtube.com/playlist?list=PL0G-Nd0V5ZMr0MOQzwEe8nrQGfOQnpwd
✅Solve a System of Equations Using Elimination | Easy
https://www.youtube.com/playlist?list=PL0G-Nd0V5ZMolnC3-PMHsnsR6MDtGKdgM
✅Solve a System of Equations Using Elimination | Medium
https://www.youtube.com/playlist?list=PL0G-Nd0V5ZMo4pWWVhqwpndkqj2gi58_P
✅Solve a System of Equations Using Elimination | Hard
https://www.youtube.com/playlist?list=PL0G-Nd0V5ZMr9vwB_4rGYne9YdfIULcxm
✅Solve a System of Equations Word Problem
https://www.youtube.com/playlist?list=PL0G-Nd0V5ZMr7bMMmNPXW26XO-pJrf1Z-
✅Solve a System of Equations With Three Variables
https://www.youtube.com/playlist?list=PL0G-Nd0V5ZMpJiU75Ns76Ys7KQjELrzm9
🗂️ Organized playlists by classes here: https://www.youtube.com/user/MrBrianMcLogan/playlists
🌐 My Website - http://www.freemathvideos.com
Connect with me:
⚡️Facebook - https://www.facebook.com/freemathvideos
⚡️Instagram - https://www.instagram.com/brianmclogan/
⚡️Twitter - https://twitter.com/mrbrianmclogan
⚡️Linkedin - https://www.linkedin.com/in/brian-mclogan-16b43623/
👨🏫 Current Courses on Udemy: https://www.udemy.com/user/brianmclogan2/
👨👩👧👧 About Me: I make short, to-the-point online math tutorials. I struggled with math growing up and have been able to use those experiences to help students improve in math through practical applications and tips. Find more here: https://www.freemathvideos.com/about-me/
#Systemofequations #Algebraically #brianmclogan
- published: 01 Oct 2012
- views: 1852846
10:27
Solving Systems of Equations By Elimination & Substitution With 2 Variables
This algebra video tutorial explains how to solve systems of equations by elimination and how to solve systems of equations by substitution with 2 variables. ...
This algebra video tutorial explains how to solve systems of equations by elimination and how to solve systems of equations by substitution with 2 variables.
Systems of Linear Equations - 2 Variables: https://www.youtube.com/watch?v=oKqtgz2eo-Y
Systems of Equations - Fractions & Decimals:
https://www.youtube.com/watch?v=jlddJQ1qYDU
One Solution, No Solution or Many Solutions?
https://www.youtube.com/watch?v=bq5gDsEdN3Q
Systems of Equations - Substitution Method:
https://www.youtube.com/watch?v=cblHUeq3bkE
Solving Systems of Equations By Graphing:
https://www.youtube.com/watch?v=Pd4hwS8qHms
________________________________________
Systems of Linear Equations - 3 Variables:
https://www.youtube.com/watch?v=0JQeo0yC9OQ
Systems of Equations - Word Problems:
https://www.youtube.com/watch?v=YgtidDkjJ9M
Systems of Quadratic Equations:
https://www.youtube.com/watch?v=rq5AjFs95qw
Systems of Nonlinear Equations:
https://www.youtube.com/watch?v=JPdLEaxlnZQ
________________________________________
Final Exams and Video Playlists:
https://www.video-tutor.net/
Full-Length Videos and Worksheets:
https://www.patreon.com/MathScienceTutor/collections
https://wn.com/Solving_Systems_Of_Equations_By_Elimination_Substitution_With_2_Variables
This algebra video tutorial explains how to solve systems of equations by elimination and how to solve systems of equations by substitution with 2 variables.
Systems of Linear Equations - 2 Variables: https://www.youtube.com/watch?v=oKqtgz2eo-Y
Systems of Equations - Fractions & Decimals:
https://www.youtube.com/watch?v=jlddJQ1qYDU
One Solution, No Solution or Many Solutions?
https://www.youtube.com/watch?v=bq5gDsEdN3Q
Systems of Equations - Substitution Method:
https://www.youtube.com/watch?v=cblHUeq3bkE
Solving Systems of Equations By Graphing:
https://www.youtube.com/watch?v=Pd4hwS8qHms
________________________________________
Systems of Linear Equations - 3 Variables:
https://www.youtube.com/watch?v=0JQeo0yC9OQ
Systems of Equations - Word Problems:
https://www.youtube.com/watch?v=YgtidDkjJ9M
Systems of Quadratic Equations:
https://www.youtube.com/watch?v=rq5AjFs95qw
Systems of Nonlinear Equations:
https://www.youtube.com/watch?v=JPdLEaxlnZQ
________________________________________
Final Exams and Video Playlists:
https://www.video-tutor.net/
Full-Length Videos and Worksheets:
https://www.patreon.com/MathScienceTutor/collections
- published: 17 Jan 2018
- views: 2290755
8:22
GCSE Maths - How to Solve Simultaneous Equations - Using the Elimination Technique
This video covers how to use the elimination technique to solve simultaneous equations.
This video is suitable for maths courses around the world.
KS3 - All on...
This video covers how to use the elimination technique to solve simultaneous equations.
This video is suitable for maths courses around the world.
KS3 - All on your course
GCSE Foundation - All on your course
GCSE Higher - All on your course
A-level - All on your course
Maths Playlist:
https://www.youtube.com/playlist?list=PLidqqIGKox7XPh1QacLRiKto_UlnRIEVh
GCSE Chemistry playlist:
https://www.youtube.com/watch?v=fN8kH9Vvqo0&list=PLidqqIGKox7WeOKVGHxcd69kKqtwrKl8W
GCSE Biology Playlist:
https://www.youtube.com/watch?v=--dIBinUdeU&list=PLidqqIGKox7X5UFT-expKIuR-i-BN3Q1g
GCSE Physics Playlist:
https://www.youtube.com/watch?v=aHVJfRxeAxo&list=PLidqqIGKox7UVC-8WC9djoeBzwxPeXph7
https://wn.com/Gcse_Maths_How_To_Solve_Simultaneous_Equations_Using_The_Elimination_Technique
This video covers how to use the elimination technique to solve simultaneous equations.
This video is suitable for maths courses around the world.
KS3 - All on your course
GCSE Foundation - All on your course
GCSE Higher - All on your course
A-level - All on your course
Maths Playlist:
https://www.youtube.com/playlist?list=PLidqqIGKox7XPh1QacLRiKto_UlnRIEVh
GCSE Chemistry playlist:
https://www.youtube.com/watch?v=fN8kH9Vvqo0&list=PLidqqIGKox7WeOKVGHxcd69kKqtwrKl8W
GCSE Biology Playlist:
https://www.youtube.com/watch?v=--dIBinUdeU&list=PLidqqIGKox7X5UFT-expKIuR-i-BN3Q1g
GCSE Physics Playlist:
https://www.youtube.com/watch?v=aHVJfRxeAxo&list=PLidqqIGKox7UVC-8WC9djoeBzwxPeXph7
- published: 16 Jan 2022
- views: 222911
12:44
Solving systems of equations by elimination | Algebra Basics | Khan Academy
Courses on Khan Academy are always 100% free. Start practicing—and saving your progress—now: https://www.khanacademy.org/math/algebra-home/alg-system-of-equatio...
Courses on Khan Academy are always 100% free. Start practicing—and saving your progress—now: https://www.khanacademy.org/math/algebra-home/alg-system-of-equations/alg-equivalent-systems-of-equations/v/solving-systems-of-equations-by-elimination
Solving Systems of Equations by Elimination. Created by Sal Khan.
Watch the next lesson: https://www.khanacademy.org/math/algebra-basics/core-algebra-systems/core-algebra-systems-tutorial/v/solving-systems-of-equations-by-multiplication?utm_source=YT&utm_medium=Desc&utm_campaign=algebrabasics
Missed the previous lesson? https://www.khanacademy.org/math/algebra-basics/core-algebra-systems/core-algebra-systems-tutorial/v/solving-linear-systems-by-substitution?utm_source=YT&utm_medium=Desc&utm_campaign=algebrabasics
Algebra basics on Khan Academy: Topics covered in a traditional college level introductory macroeconomics course
About Khan Academy: Khan Academy offers practice exercises, instructional videos, and a personalized learning dashboard that empower learners to study at their own pace in and outside of the classroom. We tackle math, science, computer programming, history, art history, economics, and more. Our math missions guide learners from kindergarten to calculus using state-of-the-art, adaptive technology that identifies strengths and learning gaps. We've also partnered with institutions like NASA, The Museum of Modern Art, The California Academy of Sciences, and MIT to offer specialized content.
For free. For everyone. Forever. #YouCanLearnAnything
Subscribe to Khan Academy’s Macroeconomics channel: https://www.youtube.com/channel/UCBytY7pnP0GAHB3C8vDeXvg
Subscribe to Khan Academy: https://www.youtube.com/subscription_center?add_user=khanacademy
https://wn.com/Solving_Systems_Of_Equations_By_Elimination_|_Algebra_Basics_|_Khan_Academy
Courses on Khan Academy are always 100% free. Start practicing—and saving your progress—now: https://www.khanacademy.org/math/algebra-home/alg-system-of-equations/alg-equivalent-systems-of-equations/v/solving-systems-of-equations-by-elimination
Solving Systems of Equations by Elimination. Created by Sal Khan.
Watch the next lesson: https://www.khanacademy.org/math/algebra-basics/core-algebra-systems/core-algebra-systems-tutorial/v/solving-systems-of-equations-by-multiplication?utm_source=YT&utm_medium=Desc&utm_campaign=algebrabasics
Missed the previous lesson? https://www.khanacademy.org/math/algebra-basics/core-algebra-systems/core-algebra-systems-tutorial/v/solving-linear-systems-by-substitution?utm_source=YT&utm_medium=Desc&utm_campaign=algebrabasics
Algebra basics on Khan Academy: Topics covered in a traditional college level introductory macroeconomics course
About Khan Academy: Khan Academy offers practice exercises, instructional videos, and a personalized learning dashboard that empower learners to study at their own pace in and outside of the classroom. We tackle math, science, computer programming, history, art history, economics, and more. Our math missions guide learners from kindergarten to calculus using state-of-the-art, adaptive technology that identifies strengths and learning gaps. We've also partnered with institutions like NASA, The Museum of Modern Art, The California Academy of Sciences, and MIT to offer specialized content.
For free. For everyone. Forever. #YouCanLearnAnything
Subscribe to Khan Academy’s Macroeconomics channel: https://www.youtube.com/channel/UCBytY7pnP0GAHB3C8vDeXvg
Subscribe to Khan Academy: https://www.youtube.com/subscription_center?add_user=khanacademy
- published: 08 Apr 2010
- views: 1812084
19:44
Solving Systems of Equations... Elimination Method (NancyPi)
MIT grad shows how to use the elimination method to solve a system of linear equations (aka. simultaneous equations). To skip ahead: 1) For a BASIC example wher...
MIT grad shows how to use the elimination method to solve a system of linear equations (aka. simultaneous equations). To skip ahead: 1) For a BASIC example where terms cancel right away when you add the equations, skip to 0:25. 2) For an example in which you have to MULTIPLY ONE EQUATION by a number before adding the equations, skip to time 6:26. 3) For an example in which you have to MULTIPLY BOTH EQUATIONS by numbers before adding, skip to 12:12. P.S.) For HOW TO SUBTRACT equations instead of adding them, if you'd rather do that, skip to 18:00. Nancy formerly of MathBFF explains the steps.
Follow me on Instagram! https://instagram.com/mathnancy
Follow me on Twitter: https://twitter.com/nancypi
For how to solve a system of linear equations by the SUBSTITUTION METHOD, jump to: https://youtu.be/YriMMWbndn0
What does it mean to solve a system of equations using the elimination method? It means to solve for the x and y values that make both equations true, using the elimination method. Elimination is just one way of solving (substitution is another way) and is sometimes called linear combination. Here's how:
1) BASIC ELIMINATION: First, make sure the equations are ordered in the same way, with their like terms lined up vertically. Then, try adding the equations (vertically) to make a new equation. If a term in the first equation has the same number coefficient but opposite sign (like 5y and -5y), then adding the equations will mean that those terms cancel. Since those terms disappear (in the example, 5y and -5y), there is just the variable x left in the equation so you can solve for x. Once you solve for x, you can take that number and plug it in for x in either of the original equations in the system, to solve for the other variable, y. The (x,y) pair is your solution.
2) MULTIPLY ONE EQUATION BEFORE ADDING: Sometimes terms don't immediately cancel when you add the two equations. What do you do then? Try multiplying one of the equations by a number (both the left and right sides) to make either the x terms or y terms have similar coefficients (but opposite sign), like positive 4x and negative 4x. Then add the two equations (the new version) and follow the same steps as in the first example.
3) MULTIPLY BOTH EQUATIONS BEFORE ADDING: If it does not help to just multiply one equation by a number, you may need to multiply both equations, separately, by numbers. If you check to see whether you can just multiply one equation by a number and add opposite terms/eliminate a variable, and it is not possible, then aim for an LCM, or least common multiple, by multiplying each equation by a different number, and then adding the equations.
P.S.) YES, YOU CAN SUBTRACT INSTEAD (if you want): If you have a system that has the exact same x terms or exact same y terms in both equations, if you prefer, you can just subtract the equations. Alternatively, if you still wanted to add the equations, you could just multiply one of the equations by -1 first and then add the equations and solve normally.
IMPORTANT: If you get something like 0 = 0 or 8 = 8, or something like 1 = 2 or 0 = 21 when you are following these steps and trying to solve, then you have probably found a special case. If you get something TRUE like 0 = 0 (a number equals the same number), then there are an infinite number of solutions to the system, and you can just write "infinitely-many solutions". If instead you get something FALSE like 0 = 21, then there is no solution (inconsistent system), and you can write "no solution".
For more of my math videos, check out: http://nancypi.com
https://wn.com/Solving_Systems_Of_Equations..._Elimination_Method_(Nancypi)
MIT grad shows how to use the elimination method to solve a system of linear equations (aka. simultaneous equations). To skip ahead: 1) For a BASIC example where terms cancel right away when you add the equations, skip to 0:25. 2) For an example in which you have to MULTIPLY ONE EQUATION by a number before adding the equations, skip to time 6:26. 3) For an example in which you have to MULTIPLY BOTH EQUATIONS by numbers before adding, skip to 12:12. P.S.) For HOW TO SUBTRACT equations instead of adding them, if you'd rather do that, skip to 18:00. Nancy formerly of MathBFF explains the steps.
Follow me on Instagram! https://instagram.com/mathnancy
Follow me on Twitter: https://twitter.com/nancypi
For how to solve a system of linear equations by the SUBSTITUTION METHOD, jump to: https://youtu.be/YriMMWbndn0
What does it mean to solve a system of equations using the elimination method? It means to solve for the x and y values that make both equations true, using the elimination method. Elimination is just one way of solving (substitution is another way) and is sometimes called linear combination. Here's how:
1) BASIC ELIMINATION: First, make sure the equations are ordered in the same way, with their like terms lined up vertically. Then, try adding the equations (vertically) to make a new equation. If a term in the first equation has the same number coefficient but opposite sign (like 5y and -5y), then adding the equations will mean that those terms cancel. Since those terms disappear (in the example, 5y and -5y), there is just the variable x left in the equation so you can solve for x. Once you solve for x, you can take that number and plug it in for x in either of the original equations in the system, to solve for the other variable, y. The (x,y) pair is your solution.
2) MULTIPLY ONE EQUATION BEFORE ADDING: Sometimes terms don't immediately cancel when you add the two equations. What do you do then? Try multiplying one of the equations by a number (both the left and right sides) to make either the x terms or y terms have similar coefficients (but opposite sign), like positive 4x and negative 4x. Then add the two equations (the new version) and follow the same steps as in the first example.
3) MULTIPLY BOTH EQUATIONS BEFORE ADDING: If it does not help to just multiply one equation by a number, you may need to multiply both equations, separately, by numbers. If you check to see whether you can just multiply one equation by a number and add opposite terms/eliminate a variable, and it is not possible, then aim for an LCM, or least common multiple, by multiplying each equation by a different number, and then adding the equations.
P.S.) YES, YOU CAN SUBTRACT INSTEAD (if you want): If you have a system that has the exact same x terms or exact same y terms in both equations, if you prefer, you can just subtract the equations. Alternatively, if you still wanted to add the equations, you could just multiply one of the equations by -1 first and then add the equations and solve normally.
IMPORTANT: If you get something like 0 = 0 or 8 = 8, or something like 1 = 2 or 0 = 21 when you are following these steps and trying to solve, then you have probably found a special case. If you get something TRUE like 0 = 0 (a number equals the same number), then there are an infinite number of solutions to the system, and you can just write "infinitely-many solutions". If instead you get something FALSE like 0 = 21, then there is no solution (inconsistent system), and you can write "no solution".
For more of my math videos, check out: http://nancypi.com
- published: 16 May 2018
- views: 857579
4:33
Elimination Method | Simultaneous Equations
In this video we look at how to solve simultaneous equations by elimination. I hope you find this video on solving simultaneous equations using the elimination ...
In this video we look at how to solve simultaneous equations by elimination. I hope you find this video on solving simultaneous equations using the elimination method helpful. If you have any questions about the math, just put them in the comments.
https://wn.com/Elimination_Method_|_Simultaneous_Equations
In this video we look at how to solve simultaneous equations by elimination. I hope you find this video on solving simultaneous equations using the elimination method helpful. If you have any questions about the math, just put them in the comments.
- published: 23 Jun 2020
- views: 70767
4:45
Solving Systems of Equations Elimination Method
Learn how to Solve Systems of equations by Elimination in this free Math Video Tutorial by Mario's Math Tutoring.
0:23 Example 1 Solve the System 5x-y=7, x +...
Learn how to Solve Systems of equations by Elimination in this free Math Video Tutorial by Mario's Math Tutoring.
0:23 Example 1 Solve the System 5x-y=7, x + 4y = 14
1:56 Example 2 Solve the System x + 2y = 6, -3x - 6y = 4 (No Solution)
2:54 Example 3 Solve 2x - y = 5, -4x + 2y = -10 (Infinite Solutions)
3:48 Example 4 Solve 2x + 3y = -1, 5x + 4y = 1
Related Videos:
Solving Systems of Equations Using Substitution Method
https://youtu.be/yOixEPlWXuo
Solving Systems of Equations by Graphing
https://youtu.be/We-5wufwkxg
Learn Algebra 1 Lesson by Lesson in my "Learn Algebra 1" video course for sale. 87 Lessons teaching you step by step Algebra 1. Check out the 13 free lessons(1 from each chapter)
https://mariosmathtutoring.teachable.com/p/learn-algebra-1-video-course
Looking to raise your math score on the ACT and new SAT?
Check out my Huge ACT Math Video Course and my Huge SAT Math Video Course for sale at
http://mariosmathtutoring.teachable.com
For online 1-to-1 tutoring or more information about me see my website at:
http://www.mariosmathtutoring.com
* Organized List of My Video Lessons to Help You Raise Your Scores & Pass Your Class. Videos Arranged by Math Subject as well as by Chapter/Topic. (Bookmark the Link Below)
http://www.mariosmathtutoring.com/free-math-videos.html
https://wn.com/Solving_Systems_Of_Equations_Elimination_Method
Learn how to Solve Systems of equations by Elimination in this free Math Video Tutorial by Mario's Math Tutoring.
0:23 Example 1 Solve the System 5x-y=7, x + 4y = 14
1:56 Example 2 Solve the System x + 2y = 6, -3x - 6y = 4 (No Solution)
2:54 Example 3 Solve 2x - y = 5, -4x + 2y = -10 (Infinite Solutions)
3:48 Example 4 Solve 2x + 3y = -1, 5x + 4y = 1
Related Videos:
Solving Systems of Equations Using Substitution Method
https://youtu.be/yOixEPlWXuo
Solving Systems of Equations by Graphing
https://youtu.be/We-5wufwkxg
Learn Algebra 1 Lesson by Lesson in my "Learn Algebra 1" video course for sale. 87 Lessons teaching you step by step Algebra 1. Check out the 13 free lessons(1 from each chapter)
https://mariosmathtutoring.teachable.com/p/learn-algebra-1-video-course
Looking to raise your math score on the ACT and new SAT?
Check out my Huge ACT Math Video Course and my Huge SAT Math Video Course for sale at
http://mariosmathtutoring.teachable.com
For online 1-to-1 tutoring or more information about me see my website at:
http://www.mariosmathtutoring.com
* Organized List of My Video Lessons to Help You Raise Your Scores & Pass Your Class. Videos Arranged by Math Subject as well as by Chapter/Topic. (Bookmark the Link Below)
http://www.mariosmathtutoring.com/free-math-videos.html
- published: 19 Feb 2016
- views: 62463
9:55
Solving System of Linear Equations by Elimination/ Addition Method
This video will demonstrate how to solve system of linear equations by elimination method.
#SolvingSystemofLinearEquations
#SolvingSystemofLinearEquationsbyE...
This video will demonstrate how to solve system of linear equations by elimination method.
#SolvingSystemofLinearEquations
#SolvingSystemofLinearEquationsbyElimination Method
#Elimination Method
#Addition Method
#Math Teacher Gon
#Math Made Easy
https://wn.com/Solving_System_Of_Linear_Equations_By_Elimination_Addition_Method
This video will demonstrate how to solve system of linear equations by elimination method.
#SolvingSystemofLinearEquations
#SolvingSystemofLinearEquationsbyElimination Method
#Elimination Method
#Addition Method
#Math Teacher Gon
#Math Made Easy
- published: 22 Nov 2020
- views: 56685