Elementary Technical Mathematics

Published by Brooks Cole
ISBN 10: 1285199197
ISBN 13: 978-1-28519-919-1

Chapter 1 - Section 1.2 - Order of Operations - Exercise: 28

Answer

0

Work Step by Step

We apply the order of operations: $8 - 3(9 - 2) \div 21 - 7=8-3(7)\div21-7=8-21\div21-7=8-1-7=7-7=0$
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