Code: Select all
\documentclass{article}
\usepackage{amsmath}
\begin{document}
\begin{enumerate}
\item
\begin{align*}
a&=1+1\\
&=2
\end{align*}
\end{enumerate}
\end{document}

Code: Select all
\documentclass{article}
\usepackage{amsmath}
\begin{document}
\begin{enumerate}
\item
\begin{align*}
a&=1+1\\
&=2
\end{align*}
\end{enumerate}
\end{document}
NEW: TikZ book now 40% off at Amazon.com for a short time.
Code: Select all
\documentclass{article}
\usepackage{amsmath}
\begin{document}
\begin{enumerate}
\item
$\begin{aligned}[t]
a&=1+1\\
&=2
\end{aligned}$
\end{enumerate}
\end{document
NEW: TikZ book now 40% off at Amazon.com for a short time.