You can use both inline and block TeX:
Did you know that $1 + 1 = 2$? I can prove it:
$$
\begin{aligned}
1 = 1 &\implies 2 = 2\\
&\implies \frac{2}{2}(2) = 2\\
&\implies \frac{1}{2}(2) + \frac{1}{2}(2) = 2\\
&\implies 1 + 1 = 2
\end{aligned}
$$
You can also hit Ctrl
+ M
to toggle print-friendly mode.