Algebra 1: Common Core (15th Edition)

Published by Prentice Hall
ISBN 10: 0133281140
ISBN 13: 978-0-13328-114-9

Chapter 3 - Solving Inequalities - Common Core Cumulative Standards Review - Selected Response - Page 230: 22

Answer

3

Work Step by Step

$11(d+1)=4(d+8)$ (Use the distributive property, and multiply the number on the outside of the parenthesis to the numbers inside the parenthesis) $11d+11=4d+32$ (Subtract 11 on both sides) $11d=4d+21$ (Subtract 4d from both sides) $7d=21$ (Divide each side by 7) d=3
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