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 - Section 2.2 - The Multiplication Property of Equality - Exercise Set - Page 130: 9



Work Step by Step

Divide both sides of the equation by 8 to isolate the variable. -28=8z 8z=-28 $\frac{8z}{8}$=-$\frac{28}{8}$ z=-$\frac{28}{8}=-\frac{28\div4}{8\div4}$ z=-$\frac{7}{2}$ Check the answer. 8(-$\frac{7}{2}$)=-28 -$\frac{8(7)}{2}$=-28 -$\frac{56}{2}$=-28 -28=-28
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