Prealgebra (7th Edition)

Published by Pearson
ISBN 10: 0321955048
ISBN 13: 978-0-32195-504-3

Chapter 3 - Section 3.2 - Integrated Review - Expressions and Equations: 22

Answer

$z=-120$

Work Step by Step

$\frac{z}{4}=-23-7\rightarrow$ simplify $\frac{z}{4}=-30\rightarrow$ multiply both sides by 4 $\frac{z}{4}\times4=-30\times4\rightarrow$ simplify $z=-120$ Check the solution by plugging in the value for z and determine whether the resulting equation is true. $\frac{-120}{4}=-23-7\rightarrow$ simplify $-30=-30$ This is true so the solution is correct.
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