SOLUTION: Please help to figure this out- my brain hurts....Thanks! 9y-1/y^2-81 divided by 1-9y/y+9

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Question 172081: Please help to figure this out- my brain hurts....Thanks!
9y-1/y^2-81 divided by 1-9y/y+9
Answer by solver91311(17077) About Me  (Show Source):
You can put this solution on YOUR website!
Hint 1: a-b=-%28b-a%29 so 1-9y=-%289y-1%29

Hint 2: a%5E2-b%5E2=%28a%2Bb%29%28a-b%29 so y%5E2-81=%28y%2B9%29%28y-9%29

Hint 3: To divide one fraction by the other, invert the divisor and multiply.