Question

If `1/(x-4) = x`, what is `x-1/x`?

Answer 1

`x-1/x=4`

Explanation:

As `1/(x-4)=x`, we have

`x(x-4)=1`

or `x-4=1/x`

or `x=1/x+4`

and `x-1/x=4`