Elementary and Intermediate Algebra: Concepts & Applications (6th Edition)

Published by Pearson
ISBN 10: 0-32184-874-8
ISBN 13: 978-0-32184-874-1

Chapter R - Elementary Algebra Review - R.2 Equations, Inequalities, and Problem Solving - R.2 Exercise Set: 26

Answer

$x=12$

Work Step by Step

Removing the grouping symbols and combining like terms, the value of the variable that satisfies the given expression, $ 18=9-(3-x) ,$ is \begin{array}{l}\require{cancel} 18=9-3+x \\\\ -x=9-3-18 \\\\ -x=-12 \\\\ x=12 .\end{array}
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