%% 
%%  Example 07-03-4 
%%  Copyright (C) 2017 Herbert Voss
%% 
%% ==== 
% Show page(s) 1
%% 
%% 
\documentclass[]{screxa}
\pagestyle{empty}
\setlength\textwidth{328.62788pt}
\setlength\parindent{0pt}
\usepackage[T1]{fontenc}
%StartShownPreambleCommands
\usepackage{amsmath,bigdelim}
%StopShownPreambleCommands
\begin{document}
\[
\begin{array}{rc@{\qquad}c}
\ldelim\{{2}{2.75cm}[some text here]     %%% ----- Martin -----
  & x = 2\quad\text{if }y > 2  & \refstepcounter{equation}(\theequation)\\
  & x = 3\quad\text{if }y \le 2& \refstepcounter{equation}(\theequation)
\end{array}
\]
\end{document}
