How can I rewrite a function so it’s no longer in indeterminate form when $x$ is in the exponent?

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I have to rewrite $f(x)$ so that it is no longer is indeterminante as the limit approaches infinity.

$$f(x) = \frac{6+2e^{-5x}}{5-16e^{-5x}}$$

I am really not sure how to go about it, though. Can someone please help me out?