# Chapter 6 - Rational Expressions and Equations - 6.3 Addition, Subtraction, and Least Common Denominators - 6.3 Exercise Set: 11

$\dfrac{8}{4x-7}$

#### Work Step by Step

When adding two fractions with common denominators, we add or subtract the numerators and copy the denominator. Therefore, the given expression, $\dfrac{11}{4x-7}-\dfrac{3}{4x-7} ,$ simplifies to \begin{array}{l}\require{cancel} \dfrac{11-3}{4x-7} \\\\= \dfrac{8}{4x-7} .\end{array}

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