Algebra: A Combined Approach (4th Edition)

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

Chapter 4 - Section 4.2 - Solving Systems of Linear Equations by Substitution - Exercise Set: 40

Answer

-20a + 28b = 16

Work Step by Step

5a - 7b = -4 multiply to both sides by -4 -4(5a - 7b ) = -4 ( -4 ) use the distributive property - 20a + 28b = 16
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