# Solving a System using Elimination

Taught by mrbrianmclogan
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Lesson Summary:

In this lesson, you'll learn how to solve a system of equations through elimination. To eliminate a variable, you'll need to get one of your coefficients to be zero. If none of the coefficients match up, you can multiply both or one equation by a multiple to get one of them to be negative so that when you add them together, the two numbers will not cancel out. After eliminating a variable, you can solve for the other variable by substituting the value back into one of the original equations.

Lesson Description:

How to solve a system of equation using elimination

I show how to solve math problems online during live instruction in class. This is my way of providing free tutoring for the students in my class and for students anywhere in the world. Every video is a short clip that shows exactly how to solve math problems step by step. The problems are done in real time and in front of a regular classroom. These videos are intended to help you learn how to solve math problems, review how to solve a math problems, study for a test, or finish your homework. I post all of my videos on YouTube, but if you are looking for other ways to interact with me and my videos you can follow me on the following pages through My Blog, Twitter, or Facebook.

Questions answered by this video:
• How do you solve a system of equations using elimination?
• How do you solve the system 3x + 5y = 7 and 4x + 2y = 0 using elimination?
• How do you get two variables to cancel in a system of equations?
• After you solve a system of equations for one variable, how do you find the other variable?
• How do you find y after finding x in a system of equations?
• #### Staff Review

• Currently 4.0/5 Stars.
This lesson shows an example of taking two equations in two variables and solving for the variables using the elimination method. All steps involved in getting a variable to cancel and then solving are shown.