Tolong dengan caranya ~thx

(fog) (x) =f(g(x)) =f(x+2/x-3)
=3.(x+2/x-3)-5
=3x+6/x-3 - 5
=3x+6-5(x-3) /x-3
=3x+6-5x+15 / x-3
=-2x+21 / x-3
(gof) (x) =g(f(x))
=g(3x-5)
=3x-5+2 / 3x-5-3
=3x-3 / 3x-8