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 R - Elementary Algebra Review - R.2 Equations, Inequalities, and Problem Solving - R.2 Exercise Set - Page 947: 36



Work Step by Step

Using the properties of equality, in terms of $r,$ the given equation is equivalent to \begin{array}{l}\require{cancel} q=\dfrac{p-r}{2} \\\\ 2(q)=2\left(\dfrac{p-r}{2}\right) \\\\ 2q=p-r \\\\ r=p-2q .\end{array}
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