Basic College Mathematics (10th Edition)

Published by Pearson
ISBN 10: 0134467795
ISBN 13: 978-0-13446-779-5

Chapter 9 - Basic Algebra - 9.6 Solving Equations - 9.6 Exercises - Page 671: 76



Work Step by Step

We are given the equation $-1=y+7-9$. In order to solve, we must first group like terms on the right side. $-1=y+7-9=y-2$ Add 2 to both sides. $-1+2=y-2+2$ $1=y+0$ $y=1$
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