Algebra: A Combined Approach (4th Edition)

Published by Pearson
ISBN 10: 0321726391
ISBN 13: 978-0-32172-639-1

Chapter 1 - Section 1.7 - Properties of Real Numbers - Exercise Set - Page 73: 108


Example answer: 5-3=2. If the order of the equation is changed, the answer will not be 2. 3-5=-2. Instead, for this problem, you get a negative answer. Since the answer is different, it can't be commutative.

Work Step by Step

Subtraction must be performed in the order that it was originally intended. Changing the order changes the answer.
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