# Numbered align with bracket [duplicate]

I have the following code

\begin{align}
s'(t) &= -\beta s(t) i(t)\\
i'(t) &= \beta s(t) i(t) - \gamma i(t)\\
r'(t) &= \gamma i(t),
\end{align}


and I want to enclose this with a bracket like a case, but maintaining the numbered equations.

• See the empheq package – daleif Nov 17 '15 at 21:37

Simple with empheq. Needless to load amsmath, as it loads mathtools, which loads amsmath:

\documentclass{article}