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

$\dfrac{4}{2x+3}$
When subtracting two fractions with common denominators, we subtract the numerators and copy the denominator. Therefore, the given expression, $\dfrac{9}{2x+3}-\dfrac{5}{2x+3} ,$ simplifies to \begin{array}{l}\require{cancel} \dfrac{9-5}{2x+3} \\\\= \dfrac{4}{2x+3} .\end{array}