Basic College Mathematics (9th Edition)

Published by Pearson
ISBN 10: 0321825535
ISBN 13: 978-0-32182-553-7

Chapters 1-5 - Cumulative Review Exercises: 21

Answer

21

Work Step by Step

To solve for x use cross multiplication or simplify the equitable fraction and go from there. $\frac{9}{12}=\frac{3}{4}$ therefore $\frac{x}{28}$ has to equal \frac{3}{4} $3\times7=21$ and $4\times7=28$
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