Basic College Mathematics (10th Edition)

Published by Pearson
ISBN 10: 0134467795
ISBN 13: 978-0-13446-779-5

Chapter 9 - Basic Algebra - 9.3 Multiplying and Dividing Signed Numbers - 9.3 Exercises - Page 646: 92



Work Step by Step

RECALL: The order of operations follow the PEMDAS rule: First Priority: P- parenthesis or grouping symbols Second Priority: E- exponents Third Priority: M/D - multiplication or division, whichever comes first from the left Fourth Priority: A/S - addition or subtraction, whichever comes first from the left Using the rules above gives the following steps: Get the absolute value of $-3$ to obtain: $=−6 \cdot 3 \div 9 \cdot (-2)$ Perform the first multiplication from the left to obtain: $=-18 \div 9 \cdot (-2)$ Perform the division to obtain: $=-2 \cdot (-2)$ Multiply to obtain: $=4$
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