Answer
$c = P - a - b$
Work Step by Step
$P = a + b+c$
$P - a - b = a + b +c - a-b$
$P - a -b = c$
$c = P - a - b$
Precalculus (6th Edition)
by Lial, Margaret L.; Hornsby, John; Schneider, David I.; Daniels, Callie
Published by
Pearson
ISBN 10:
013421742X
ISBN 13:
978-0-13421-742-0
Chapter 1 - Equations and Inequalities - 1.1 Linear Equations - 1.1 Exercises - Page 93: 41
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