Answer
$\frac{-5}{x-3}$
Work Step by Step
To simplify, divide both the numerator and denominator by their greatest common factor.
Use the distributive property to find the GCF.
$\frac{-15}{3x-9}=\frac{-15}{3(x-3)}=\frac{-15\div3}{3(x-3)\div3}=\frac{-5}{x-3}$
