Elementary Algebra

Published by Cengage Learning
ISBN 10: 1285194055
ISBN 13: 978-1-28519-405-9

Chapter 1 - Some Basic Concepts of Arithmetic and Algebra - 1.3 - Integers: Addition and Subtraction - Problem Set 1.3: 61

Answer

$-15$

Work Step by Step

Using order of operations, the given expression, $ 7-12+14-15-9 $, simplifies to \begin{array}{l}\require{cancel} -5+14-15-9 \\\\= 9-15-9 \\\\= -6-9 \\\\= -15 .\end{array}
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