Basic College Mathematics (9th Edition)

Published by Pearson
ISBN 10: 0321825535
ISBN 13: 978-0-32182-553-7

Chapter 9 - Basic Algebra - 9.7 Solving Equations with Several Steps - 9.7 Exercises - Page 678: 13

Answer

$z=6$

Work Step by Step

We are given the equation $-\frac{1}{2}z+2=-1$. In order to solve, we can first subtract 2 from both sides. $-\frac{1}{2}z+2-2=-1-2$ $-\frac{1}{2}z=-3$ Multiply both sides by -2. $(-\frac{1}{2}z\times-2)=z=-3\times-2=6$ $z=6$
Update this answer!

You can help us out by revising, improving and updating this answer.

Update this answer

After you claim an answer you’ll have 24 hours to send in a draft. An editor will review the submission and either publish your submission or provide feedback.