Intermediate Algebra: Connecting Concepts through Application

Published by Brooks Cole
ISBN 10: 0-53449-636-9
ISBN 13: 978-0-53449-636-4

Appendix A - Basic Algebra Review - A Exercises - Page A-15: 55



Work Step by Step

Step 1: The expression to be simplified is $7-2(4+5)$. Step 2: Performing the operations in the parenthesis first: $7-2(9)$. Step 3: The expression becomes $7-18$. Step 4: $7-18=-11$
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