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December 4, 2016
Posted by **Alan** on Wednesday, January 16, 2013 at 6:57am.

[2x/(x^2-y^2)]-[7/(y-x)]

Thank you! :)

- Algebra -
**bobpursley**, Wednesday, January 16, 2013 at 9:14amchange the second term to +7/(x-y)

now get a common denominator of (x-y)(x+y)

now you have for a total numerator

2x+7(x+y) which is 9x+7y all over the common denominator.