Algebra: A Combined Approach (4th Edition)

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

Chapter 2 - Section 2.2 - The Multiplication Property of Equality - Practice: 8

Answer

x = -3

Work Step by Step

-7x + 2x + 3 - 20 = -2 Combine like terms: -5x - 17 = -2 Add 17 to both sides: -5x = 15 Divide both sides by -5: -5x/(-5) = 15/(-5) x = -3 Check with substitution: -7(-3) + 2(-3) + 3 - 20 = -2 21 - 6 + 3 - 20 = -2 -2 = -2
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