Introductory Algebra for College Students (7th Edition)

Published by Pearson
ISBN 10: 0-13417-805-X
ISBN 13: 978-0-13417-805-9

Chapter 2 - Mid-Chapter Check Point - Page 155: 11



Work Step by Step

5z+7=6(z-2)-4(2z-3) 5z+7=6(z)-6(2)-4(2z)-4(-3) 5z+7=6z-12-8z+12 5z+7=(6z-8z)+(-12+12) 5z+7=-2z+0 5z=-2z-7 5z+2z=-7 7z=-7 z=$\frac{-7}{7}$ z=-1
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