Elementary Algebra

Published by Cengage Learning
ISBN 10: 1285194055
ISBN 13: 978-1-28519-405-9

Chapter 2 - Real Numbers - Chapters 1-2 Cumulative Review Problem Set - Page 91: 4



Work Step by Step

We follow order of operations, so we first consider everything inside of the brackets, then we multiply, and then we add/subtract everything else: $-9-2[4-(-10+6)]-1$ =$-9-2[4-(-4)]-1$ =$-9-2[4+4]-1$ =$-9-2(8)-1$ =$-9-16-1$ =$-25-1$ =$-26$
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