The elimination method is a technique for solving systems of linear equations. This article reviews the technique with examples and even gives you a chance to try the method yourself.

In some cases, we need to slightly manipulate a system of equations before we can solve it using the elimination method. See how it's done in this video.

When solving a system of equations using elimination, when you have to multiply one of the equations to get rid of the x or y, how do you know which one you want to get rid of first?

Your life isn't a pre-planned route you follow, where one of the steps is using this elimination strategy. Instead, learning something is like unlocking a door that you can then walk through.

Solve systems of equation with one-step elimination (e.g., x-values or y-values cancel each other out).

Sal uses simple elimination to figure out how many cupcakes are eaten by children and adults. Created by Sal Khan.

Elimination works because it eliminates one of the variables, we can solve the equation only if there is 1 variable and not 2 variables.

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.

Sal explains how we can find the inverse of a 3x3 matrix using Gaussian elimination.

It doesn't matter whether you use x and y, or just numbers (because x and y are just placeholders for numbers we don't know yet). Every time you multiply or divide a term of an equation, you have to do …