Algebra 1: Common Core (15th Edition)

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

Chapter 2 - Solving Equations - 2-3 Solving Multi-Step Equations - Practice and Problem-Solving Exercises - Page 98: 48


$d=28 $

Work Step by Step

The quantity inside of the parenthesis is being multiplied by 1/4. Thus, we first multiply both sides by 4/1 (the reciprocal of 1/4) to find that $16=d-12$. We now need to get the d alone. Thus, we cancel out the subtraction by adding 12 on both sides. Thus, we obtain that $d=28$.
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