Answer
$x=13$
Work Step by Step
We start with the expression:
$x-4=9$
Use the Addition Property of Equality by adding 4 to both sides:
$x-4+4=9+4
\\x+0=13
\\x=13$
Algebra 1: Common Core (15th Edition)
by Charles, Randall I.
Published by
Prentice Hall
ISBN 10:
0133281140
ISBN 13:
978-0-13328-114-9
Chapter 2 - Solving Equations - 2-1 Solving One-Step Equations - Lesson Check - Page 85: 7
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