Question 408017
x^2-4x       7x-30
---------- - ---------
(x-5)(x+6)   (x-5)(x+6)

Since the denominators are same

{{{((x^2-4x)-(7x-30))/(x-5)(x+6)}}}

{{{(x^2-4x-7x+30)/(x-5)(x+6)}}}

{{{(x^2-11x+30)/(x-5)(x+6)}}}

{{{(x^2-6x-5x+30)/(x-5)(x+6)}}}

{{{(x(x-6)-5(x-6))/(x-5)(x+6)}}}

{{{((x-6)(cross(x-5)))/(cross(x-5))(x+6)}}}


{{{(x-6)/(x+6)}}}