Answer
$y=1$
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.
$-1+2=y-2+2$
$1=y+0$
$y=1$
Basic College Mathematics (9th Edition)
by Lial, Margaret L.; Salzman, Stanley A.; Hestwood, Diana L.
Published by
Pearson
ISBN 10:
0321825535
ISBN 13:
978-0-32182-553-7
Chapter 9 - Basic Algebra - 9.6 Solving Equations - 9.6 Exercises - Page 673: 76
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