Elementary and Intermediate Algebra: Concepts & Applications (6th Edition)

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: 28



Work Step by Step

The associative law of addition states that $a+(b+c)=(a+b)+c$ (where $a$, $b$, and $c$ are real numbers). That is, changing the grouping of numbers to be added does not affect the answer. Therefore, $(5+m)+r=5+(m+r)$.
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