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 - 1.5 - Use of Properties - Problem Set 1.5: 26

Answer

$-14$

Work Step by Step

We start with the given expression: $-9(14)-7(-16)$ Since there is no common factor here, we are unable to use any of the properties to help us simplify. Instead, we must follow the order of operations. First, we multiply from left to right: $-126-(-112)$ Recall: $-a-(-b)=-a+b$. Thus, we obtain: $-126+112=-14$
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