### Very basic simplification question

I know what the answer is, however I'm trying to work through the process of this basic question. The equation is below:

(3 + x)/x^2

To simplify can't you simplify it to by simplifying the exponents:

3/x

However if you were to plug a constant into the original variable such as 2, you would get a different result than if you simplified it.

- x = 2 | (3 + x)/x^2 = 5/4
- x = 2 | 3/2

It's been a while since I went through algebra, so I'm sure there's an easy answer, I'm just wanting to know where I'm not thinking it through properly.

Thanks!