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: 7

Answer

$y=-\dfrac{5}{2}$

Work Step by Step

We first use the distributive property to simplify. Then, using the properties of equality, we obtain that the value of the variable that satisfies the given equation, $ 5(y-2)+2(y+1)=3(y-6) ,$ is \begin{array}{l}\require{cancel} 5y-10+2y+2=3y-18 \\\\ 5y+2y-3y=-18+10-2 \\\\ 4y=-10 \\\\ y=-\dfrac{10}{4} \\\\ y=-\dfrac{\cancel{2}\cdot5}{\cancel{2}\cdot2} \\\\ y=-\dfrac{5}{2} .\end{array}
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