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 - Chapter 1 Review Problem Set: 65

Answer

$-39$

Work Step by Step

Substituting $x= 7 ,$ the given expression, $ -3(x-4)-2(x+8) ,$ evaluates to \begin{array}{l}\require{cancel} -3(7-4)-2(7+8) \\\\= -3(3)-2(15) \\\\= -9-30 \\\\= -39 .\end{array}
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