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: 30

Answer

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
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