Elementary and Intermediate Algebra: Concepts & Applications (6th Edition)

Published by Pearson
ISBN 10: 0-32184-874-8
ISBN 13: 978-0-32184-874-1

Chapter 6 - Rational Expressions and Equations - 6.3 Addition, Subtraction, and Least Common Denominators - 6.3 Exercise Set - Page 393: 10



Work Step by Step

When adding two fractions with common denominators, we add the numerators and copy the denominator. Therefore, the given expression, $ \dfrac{5}{x+2}+\dfrac{8}{x+2} ,$ simplifies to \begin{array}{l}\require{cancel} \dfrac{5+8}{x+2} \\\\= \dfrac{13}{x+2} .\end{array}
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