Introductory Algebra for College Students (7th Edition)

Published by Pearson
ISBN 10: 0-13417-805-X
ISBN 13: 978-0-13417-805-9

Chapter 2 - Section 2.4 - Formulas and Percents - Exercise Set - Page 152: 12

Answer

$$M = \frac{P}{C} - 1$$

Work Step by Step

To solve this equation for $M$, we must isolate $M$. First, we subtract $C$ from each side: $$P - C = MC$$ Then, we divide the equation by $C$ to isolate $M$: $$M = \frac{P - C}{C}$$ Now, we can simplify the equation. To work more easily with the fraction, we can separate the fraction into two: $$M = \frac{P}{C} - \frac{C}{C}$$ We can now simplify: $$M = \frac{P}{C} - 1$$
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