## Algebra and Trigonometry 10th Edition

$\frac{3}{x+2}$
Both fractions have the same denominator: $\frac{x-1}{x+2}-\frac{x-4}{x+2}=\frac{(x-1)-(x-4)}{x+2}=\frac{x-1-x+4}{x+2}=\frac{3}{x+2}$