I think the technique that you are trying to apply is moving a negative power from the denominator, and while you are on the right track, what you have done is incorrect.

It is easy to get scooped into this as it is custom to change, for example, to . But it is extremely important to remember that if you are going to do this with a constant with no visible exponent, it really looks like this.

So that if you bring that 9 up, it's exponent value of 1 becomes negative, not the 9 itself.