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Substitution method review (systems of equations) - Khan Academy
The substitution method is a technique for solving a system of equations. This article reviews the technique with multiple examples and some practice problems for you to try on your own.
Systems of equations with substitution: y=4x-17.5 & y+2x=6.5
Learn to solve the system of equations y = 4x - 17.5 and y + 2x = 6.5 using substitution. Created by Sal Khan and Monterey Institute for Technology and Education.
Systems of equations with substitution: 2y=x+7 & x=y-4
When solving a system of equations using substitution, you can isolate one variable and substitute it with an expression from another equation. This will allow you to solve for one variable, which you can …
Systems of equations with substitution: -3x-4y=-2 & y=2x-5
Learn to solve the system of equations -3x - 4y = -2 and y = 2x - 5 using substitution. Created by Sal Khan.
Systems of equations with substitution
Notice that neither of these equations are already solved for x or y . As a result, the first step is to solve for x or y first. Here's how it goes:
Trolls, kings, and solving systems of equations
Oct 31, 2012 · King’s Cupcakes: Solving Systems by Elimination This video leads into the first exercise on elimination, which has a new guide video: Simple Elimination Practice.
Integrals: Trig Substitution 1 | Khan Academy
Integrals: Trig Substitution 1 Limit Examples (part 1) Integral Mbili 6 - Double Integrals 6
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Solving linear systems by substitution (old) - Khan Academy
And in this video, I'm going to show you one algebraic technique for solving systems of equations, where you don't have to graph the two lines and try to figure out exactly where they intersect.