Solving Systems of Equations by Substitution
Grade 7•45 minutes
Learning Objective
I can use substitution to solve systems of equations and check if my solution is correct.
Practice Questions
This lesson includes 2 practice questions to reinforce learning.
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1. Solve the following system of equations using substitution: y = 3x - 2 4x + y = 12
2. You are trying to solve a system of equations where neither equation is initially solved for a single variable. The equations are: 2x + y = 7 x - y = 2 Explain the steps you would take to solve this system using substitution. What would you do first, and why?
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