bantuannya ya jika f (x) = (6x-a)/(3x-5) f'(2)= 3 dit : nilai a = .........

f (x) = 18x^2 - 30x -3a x + 5a
f'(x) = 36x -30 -3a
f' (2) =3
maka
36. (2) -30 -3a = 3
72 -30 -3a = 3
42 -3a = 3
-3a = 3 - 42
-3a = -39
a = -39 / -3
a = 13