Pre-Cal please help !!!!

Question

Find the inverse f^-1 of f(x)= x-5/1+2x

Answer 1

Step 1:

The function is .

Find inverse of .

Replace

Now interchange the variables .

solve for .

Multiple each side by .

Apply the distributive property.

Subtract  from each side.

Take out as common factor.

Divide each side by .

Take out negative one as a common factor.

Replace .

Solution :

.