Algebra 1

Published by Prentice Hall
ISBN 10: 0133500403
ISBN 13: 978-0-13350-040-0

Chapter 2 - Solving Equations - 2-2 Solving Two-Step Equations - Practice and Problem-Solving Exercises - Page 91: 28

Answer

z=8

Work Step by Step

We need to get the z alone. In order to cancel out division, we use multiplication, so we multiply both sides by 9 to get that z+10=18. We now cancel out the addition by subtracting 10 on both sides, giving us a final answer of z=8. We plug 8 in for z and confirm that our answer is, indeed, correct.
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