## Elementary Algebra

$\frac{x}{x-y}$
We factor the expression in the denominator in order to cancel out common factors in the numerator and the denominator: $\frac{x^{3}}{x^{3}-x^{2}y}$ =$\frac{x^{3}}{x^{2}(x-y)}$ =$\frac{x^{3-2}}{(x-y)}$ =$\frac{x}{x-y}$