Tolong dibantu yaaa.. terima kassih banyakkk… :)))

1)
y(x-2) = 3x+5
xy – 2y = 3x + 5
xy – 3x = 2y + 5
x(y – 3) = 2y + 5
f-¹(x) = 2x + 5/ x – 3
f-¹ (4) = 13/1 = 13