Systems of Linear Equations · Algebraic Thinking

Algebraic Solutions: Substitution and Elimination

Solving systems algebraically to find exact solutions and comparing the efficiency of different methods.

Key Questions

  1. 1When is substitution a more efficient strategy than elimination?
  2. 2How does the elimination method rely on the properties of equality?
  3. 3Why is it necessary to have two independent equations to solve for two variables?

Common Core State Standards

CCSS.Math.Content.8.EE.C.8.B
Grade: 8th Grade
Subject: Mathematics
Unit: Systems of Linear Equations
Period: Algebraic Thinking

Suggested Methodologies

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