Elementary Technical Mathematics

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

Chapter 1 - Unit 1A Review - Page 26: 9



Work Step by Step

Use order of operations to solve. $12+2[3(8-2)-2(3+1)]$ $\longrightarrow$ simplify parenthesis within brackets $=12+2[3(6)-2(4)]$ $\longrightarrow$ simplify brackets; multiply $=12+2[18-8]$ $\longrightarrow$ simplify brackets $=12+2[10]$ $\longrightarrow$ multiply $=12+20$ $\longrightarrow$ add $=32$
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