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: 15

Answer

6

Work Step by Step

9(6 + 2) = 9(2 + 6) We can reverse the addends by the commutative property.
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