College Algebra (11th Edition)

Published by Pearson
ISBN 10: 0321671791
ISBN 13: 978-0-32167-179-0

Chapter R - Review Exercises - Page 75: 44



Work Step by Step

$\bf{\text{Solution Outline:}}$ Use the order of operations (PEMDAS - Parenthesis, Exponents, Multiplication/Division, Addition/Subtraction) to simplify the given expression, $ (6-9)(-2-7)\div(-4) .$ $\bf{\text{Solution Details:}}$ Simplifying the expression/s in parenthesis, the entire expression above becomes \begin{array}{l}\require{cancel} (-3)(-9)\div(-4) .\end{array} Simplifying the product/quotient, the expression above becomes \begin{array}{l}\require{cancel} 27\div(-4) \\\\= -\dfrac{27}{4} .\end{array}
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