CPM Homework Help : PCT Problem 6-91

6-91.

Simplify: $\large{\frac { x ^ { 2 } y ^ { - 3 } + x ^ { - 2 } y } { y ^ { - 1 } + x ^ { - 2 } }}$

Hint:

Multiply the fraction by: $\small{ \frac{y^3x^2}{y^3x^2}}$