If x≠6 and (x^2 - 36)/(2y) = (x - 6)/4, then in terms of y, x = ?
Choose the correct choice from the following
A) (y - 6)/2  B) (y - 3)/2  C) y - 3  D) (y - 12)/2  E) (y + 6)/2
Since (x^2 – 36)=(x-6)(x+6) the original equation can be changed into 4*(x-6)(x+6) = 2y *(x-6).   By cancelling 2(x-6) (we can do it because x≠6) we get :   2*(x+6)=y.   So x=(y-12)/2. So the answer is (y - 12)/2).
<result>D</result>
If x≠6 and (x^2 - 36)/(2y) = (x - 6)/4, then in terms of y, x = ?