Answer
$x=13$
Work Step by Step
$x-9=4$
Add 9 to both sides.
$x-9+9=4+9$
$x+0=13$
$x=13$
Basic College Mathematics (10th Edition)
by Lial, Margaret L.; Salzman, Stanley A.; Hestwood, Diana L.
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 668: 14
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