Possible Duplicate:
How can I add left aligned text to an equation?
I need to write a system with sub-items looking like this:
\begin{subequations}
\begin{gather}
\text{
{\textit{First Block Name}}
}\notag
\\
\begin{cases}\label{eq:first:block}
A = B & \text{if } C\\
A = D & \text{if } E
\end{cases}
\\
\text{
{\textit{Second Block Name}}
}\notag
\\
\begin{cases}\label{eq:second:block}
F = G & \text{if } H\\
F = I & \text{if } J
\end{cases}
\\
\end{gather}
\end{subequations}
but I'd really like to have the block names flushed left (by this code they are centered), while maintaining the "real" equation blocks centered.
any not too elaborate suggestions?