Thinking Mathematically (6th Edition)

Published by Pearson
ISBN 10: 0321867327
ISBN 13: 978-0-32186-732-2

Chapter 5 - Number Theory and the Real Number System - 5.5 Real Numbers and Their Properties; Clock Addition - Exercise Set 5.5 - Page 308: 16


$(3+7)+9 = \underline{3} +(7+\underline{9})$

Work Step by Step

The associative property states that for any real numbers a, b, and c: $a + (b+c) = (a+b)+c$ Thus, apply the associative property to the given problem to find: $(3+7)+9 = 3 +(7+9)$
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