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.

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Systems of equations overview Introduction to systems of equations Equivalent systems of equations and the elimination method Solving systems of equations with substitution

Solving for a variable first, then using substitution Sometimes using substitution is a little bit trickier. Here's another system of equations:

Learn to solve the system of equations -3x - 4y = -2 and y = 2x - 5 using substitution.

To solve a system of equations using substitution... 1. Isolate one of the variables in one of the equations, e.g. rewrite 2x+y=3 as y=3-2x. 2. You can now express the isolated variable using the …

It doesn't necessarily matter whether this will be useful in real life, the main point of doing any type of complicated math is to train your brain to use different ways of thinking to come to solutions.

Learn to solve the system of equations y = -1/4x + 100 and y = -1/4x + 120 using substitution. Created by Sal Khan and Monterey Institute for Technology and Education.

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