Answer
$\color{blue}{\dfrac{10}{x}}$
Work Step by Step
The rational expressions are similar so just add the numerator together and copy the denominator to obtain:
$=\dfrac{3+7}{x}
\\=\color{blue}{\dfrac{10}{x}}$
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 R - Review of Basic Concepts - R.5 Rational Expressions - R.5 Exercises - Page 52: 7
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