Solving a System using Elimination

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Taught by mrbrianmclogan
  • Currently 4.0/5 Stars.
5892 views | 1 rating
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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

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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.