Question 308599
(2x + 7) / ( x - 7)  -  (2x - 7) / (x + 7)

LCM = (x-7)(x+7)

(2x+7)(x+7)- (2x-7)(x-7) /(x-7)(x+7)

2x^2 +21x+49 -( 2x^2-21x+49)/(x-7)(x+7)

2x^2 +21x+49 - 2x^2+21x-49/(x-7)(x+7)
42x/(x-7)(x+7)