Answer
$4+(9+x)=x+13$
Work Step by Step
Show that $4+(9+x)$ is equivalent to $x+13$.
$4+(9+x)\longrightarrow$ Use the associative property.
=$(4+9)+x\longrightarrow$ Use the commutative property.
=$x+(4+9)\longrightarrow$ Simplify.
=$x+13$
Elementary and Intermediate Algebra: Concepts & Applications (6th Edition)
by Bittinger, Marvin L.; Ellenbogen, David J.; Johnson, Barbara L.
Published by
Pearson
ISBN 10:
0-32184-874-8
ISBN 13:
978-0-32184-874-1
Chapter 1 - Introduction to Algebraic Expressions - 1.2 The Commutative, Associative, and Distributive Laws - 1.2 Exercise Set - Page 17: 46
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