Elementary Algebra

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

Chapter 3 - Equations and Problem Solving - Chapter 3 Test - Page 139: 10



Work Step by Step

Using the properties of equality, the value of the variable that satisfies the given equation, $ -5(n-2)=-3(n+7) ,$ is \begin{array}{l}\require{cancel} -5n+10=-3n-21 \\\\ -5n+3n=-21-10 \\\\ -2n=-31 \\\\ n=\dfrac{-31}{-2} \\\\ n=\dfrac{31}{2} .\end{array}
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