Answer
$r=10$
Work Step by Step
$8=r-2$
Add 2 to both sides.
$8+2=r-2+2$
$10=r+0$
$r=10$
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 670: 15
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