SOLUTION: Subtract and Simplify: (x+3y/x-3y) - (x-3y/x+3y)

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Question 196763: Subtract and Simplify:
(x+3y/x-3y) - (x-3y/x+3y)
Answer by RAY100(1637) About Me  (Show Source):
You can put this solution on YOUR website!
(x+3y)/(x-3y) - (x-3y) /(x+3y)
.
{(x+3y)^2 - (x-3y)^2} / { x-3y)(x+3y) }
.
{ {x^2 +6xy +9y^2} - {x^2 -6xy +9y^2} ] / { (x-3y)(x+3y) }
.
12xy / { (x-3y)(x+3y) }
.
12xy / (x^2 -9y^2)
.