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 2 - Equations, Inequalities, and Problem Solving - 2.3 Formulas - 2.3 Exercise Set: 27

Answer

$d=2Q-c$

Work Step by Step

$\bf{\text{Solution Outline:}}$ To solve the given equation, $ Q=\dfrac{c+d}{2} $ for $ d ,$ use the properties of equality to isolate the variable. $\bf{\text{Solution Details:}}$ Using the properties of equality to isolate the variable, the equation above is equivalent to \begin{array}{l}\require{cancel} Q=\dfrac{c+d}{2} \\\\ 2\cdot Q=2\cdot\dfrac{c+d}{2} \\\\ 2Q=c+d \\\\ 2Q-c=d \\\\ d=2Q-c .\end{array}
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