Elementary Technical Mathematics

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

Chapter 1 - Unit 1A Review - Page 26: 8



Work Step by Step

Use the order of operations to solve. $3^2+12\div3-2\times3$ $\longrightarrow$ resolve exponent $=9+12\div3-2\times3$ $\longrightarrow$ multiply/divide working left to right $=9+4-2\times3$ $\longrightarrow$ multiply/divide working left to right $=9+4-6$ $\longrightarrow$ add/subtract working left to right $=13-6$ $\longrightarrow$ subtract $=7$
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