Algebra: A Combined Approach (4th Edition)

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

Chapter 1 - Section 1.3 - Exponents, Order of Operations, and Variable Expressions - Exercise Set: 98


Yes, because in the order of operations, the addition comes after multiplication. Without the parentheses, you will solve 32 $\times$ 5 first, but they want you to solve 12 + 32 first, so they use the parentheses.

Work Step by Step

Explain why parentheses are necessary in the expression (12 + 32) $\times$ 5.
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