Answer
$\frac{12}{25}$ uses are for pain other than headaches.
Work Step by Step
$\frac{31}{50}-\frac{7}{50}=\frac{24}{50}=\frac{24\div2}{50\div2}=\frac{12}{25}$
Prealgebra (7th Edition)
by Martin-Gay, Elayn
Published by
Pearson
ISBN 10:
0321955048
ISBN 13:
978-0-32195-504-3
Chapter 4 - Section 4.4 - Adding and Subtracting Like Fractions, Least Common Denominator, and Equivalent Fractions - Exercise Set - Page 262: 48
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