SOLUTION: How do I add this fraction together? (2x + 7) / ( x - 7) - (2x - 7) / (x + 7)

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Question 308468: How do I add this fraction together?
(2x + 7) / ( x - 7) - (2x - 7) / (x + 7)
Answer by mananth(16946) About Me  (Show Source):
You can put this solution on YOUR website!
(2x + 7) / ( x - 7) - (2x - 7) / (x + 7)
(x+7)(x-7) is the LCM
(2x+7)(x+7) - (2x-7)(x-7) / (x+7)(x-7)
2x^2 +14x+7x+49- (2x^2-14x-7x+49)/(x+7)(x-7)

2x^2 +14x+7x+49- 2x^2+14x+7x-49/(x+7)(x-7)
42x /(x+7)(x-7)