Answer
$p=\frac{qf}{q-f}$
Work Step by Step
$qf+pf=pq\\qf=pq-pf\\qf=p(q-f)\\p=\frac{qf}{q-f}$
Intermediate Algebra for College Students (7th Edition)
by Blitzer, Robert F.
Published by
Pearson
ISBN 10:
0-13417-894-7
ISBN 13:
978-0-13417-894-3
Chapter 6 - Section 6.6 - Rational Equations - Exercise Set - Page 465: 90
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