## Algebra: A Combined Approach (4th Edition)

Published by Pearson

# Chapter 4 - Section 4.2 - Solving Systems of Linear Equations by Substitution - Exercise Set: 39

- 12x + 3y = 9

#### Work Step by Step

- 4x + y = 3 multiply by 3 to both sides 3 ( -4x + y ) = $3\times3$ -12x + 3y = 9

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