Question

If F(x)=x-2 what is the inverse of F(x)

Answer 1

find x in terms of F(x)

then replace the F(x) by x
this gives the inverse function F(-1)x

Answer 2

^ This is procedurally how you should do it, yes.

But since you have a single operation,
it might be easier to think about it logically.

If we had 3*x (3 multiplying x)
The inverse would be whatever operation is the `opposite` of multiplication.
So the inverse would be x/3 (x divided by 3).

For your problem, simply apply the `opposite of subtracting 2`.