Introductory Algebra for College Students (7th Edition)

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

Chapter 1 - Section 1.2 - Fractions in Algebra - Exercise Set: 85

Answer

$\frac{7}{12}$

Work Step by Step

$\frac{4}{3} - \frac{3}{4}$ The least common denominator for the denominators 3 and 4 is 12. To obtain denominators of 12, multiply the numerator and denominator of the first fraction by 4 and second fraction by 3 $\frac{4}{3} - \frac{3}{4}$ = $\frac{4*4}{3*4} - \frac{3*3}{4*3}$ $\frac{16}{12} - \frac{9}{12}$ Calculate difference of the numerators and put this difference over the least common denominator. $\frac{16 - 9}{12}$ = $\frac{7}{12}$
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