[texhax] equation type setting

[Philip G. Ratcliffe]

> I have 3 equations which I want one per line each with a 
> \label on top of that I want all the rows to be enclosed to 
> the right with a } and the entire group to have its own 
> \label. In other words I want to be able to \ref each eqn 
> individually and also \ref the entire group...
> 
> something like:
> 
>                         
> 2+2=3    (1a)   \
> 1+3=4    (1b)   }  (1)
> 5+3=7    (1c)   /

I cooked this up in two minutes - it's more than a little ugly and can
surely be improved - sorry, no time to explain it. 

\documentclass{article}
\usepackage{amsmath}
\begin{document}
\begin{equation}
  \addtocounter{equation}{-1}
  \left.
  \parbox{0.75\textwidth}{%
    \vspace{-\baselineskip}
    \begin{subequations}
      \begin{align}
        2+2&=3 \\
        1+3&=4 \\
        5+3&=7
      \end{align}
    \end{subequations}
    \vspace{-1.5\baselineskip}
  }
  \quad
  \right\}
\end{equation}
\end{document}

Cheers,  Phil