Basic College Mathematics (10th Edition)

Published by Pearson
ISBN 10: 0134467795
ISBN 13: 978-0-13446-779-5

Chapter 1 - Whole Numbers - 1.8 Exponents, Roots, and Order of Operations - 1.8 Exercises - Page 81: 81

Answer

Any order.

Work Step by Step

The order of subtracting different numbers does not matter. Since only subtraction is performed, the parenthesis added do not matter. This means that $20-7-2$ always equals 11, regardless of where the parenthesis are.
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