Solving Equations with Substitution

7th GradeMath60 min

Learning Objective

I can solve algebraic equations using substitution.

Lesson Flow

Watch Video

7 min

Solve Systems by Substitution (y = mx + b) Fast | Algebra Made Simple

DowMath

Guided Notes

12 min

Key concepts students will learn:

  • When solving systems of equations with two variables, the solution is the ordered pair that makes both equations true.

  • In the substitution method, we replace a variable with an equivalent expression to solve the system.

  • When using substitution, once you solve for x, you can substitute that value into either equation to solve for y.

Practice

18 min

12 questions • Multiple choice & Short answer

Exit Ticket

5 min

Solve the following system of equations using substitution: y = 3x - 2 and y = x + 4. What is the value of x and y?

Teacher Guide

Get the complete package:

  • Answer keys for all questions
  • Differentiation strategies
  • Extension activities
  • Printable student handouts