Simplifying a ratio of powers This might sound like a stupid question but when it comes to simplifying when using the ratio test I get confused. Can someone please explain why $$\frac{2^{n+1}}{2^n}=\frac{2}{1}?$$ I think I might be thinking too hard because this confuses me.

Here, we have
\begin{align}
\frac{2^{n+1}}{2^n}&=2^{(n+1)-n} & \text{using exponent law $x^{a-b}=\frac{x^a}{x^b}$}\\
&=2^1 & \\
&=\frac{2}{1} & \text{because } 2^1=2=\frac{2}{1}
\end{align}
