tolong Bantu ngerjainnya

fog = f(g(x) = f(x+2/x-3)
= 2(x+2/x-3) -1 / (x+2/x-3) +5
= ((2x+4/x-3) - 1) / ((x+2/x-3)+5)
= ((2x+4-x+3)/(x-3)) / ((x+2+5x-15)/(x-3))
= (x+7/x-3)/(6x-13/x-3)
= x+7/6x-13

fog-1 = ???
misal fog = y
y = x+7/6x-13
y(6x-13) = x+7
6xy - 13y = x + 7
6xy - x = 13y + 7
x (6y -1) = 13y + 7
x = 13y+7/6y-1
fog inverse (x) = 13x+7/6x-1

Adapun penjabarannya terlampir berikut: