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: 7

Answer

x = 5 y = -2

Work Step by Step

3x + 2y = 11 first equation 5x - 2y = 29 second equation ___________________ 8x = 40 add the equations to eleminate y x = 5 divide both sides by 8 let x = 5 in first equation $3\times5$ + 2y = 11 15 + 2y = 11 2y = 11 - 15 2y = -4 y = -2
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