Algebra 1: Common Core (15th Edition)

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: 7

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: $x-4+4=9+4 \\x+0=13 \\x=13$
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