Algebra: A Combined Approach (4th Edition)

Published by Pearson
ISBN 10: 0321726391
ISBN 13: 978-0-32172-639-1

Chapter 4 - Section 4.3 - Solving Systems of Linear Equations by Addition - Exercise Set: 5

Answer

x = -2 y = -5

Work Step by Step

3x + y = -11 first equation 6x + 2y = -22 multiply by 2 first equation 6x - 2y = -2 secon equation __________________ 12x = -24 add both sides to eleminate y x = -2 divide both sides by 12 let x = -2 in first equation $3\times(-2)$ + y = -11 -6 + y = -11 y = -11 + 6 y = -5
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