Prealgebra (7th Edition)

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

Chapter 3 - Section 3.3 - Solving Linear Equations in One Variable - Exercise Set - Page 188: 30


The solution is -8

Work Step by Step

7-z=15 Subtract 7 from both sides 7-z -7=15-7 -z=8 Divide both sides by -1 $\frac{-z}{-1}$=$\frac{8}{-1}$ z=-8 The solution is -8 Check 7-z=15 7-(-8)=15 7+8=15 15=15
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.