Prealgebra (7th Edition)

Published by Pearson
ISBN 10: 0321955048
ISBN 13: 978-0-32195-504-3

Chapter 3 - Section 3.1 - Simplifying Algebraic Expressions - Vocabulary, Readiness & Video Check - Page 169: 12

Answer

Because the 20 is not within the parentheses

Work Step by Step

We don't multiply the 20 by the 2 because it is not within the parentheses
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