%% 
%%  Example 02-01-8 
%%  Copyright (C) 2016 Herbert Voss
%% 
%% ==== 
% Show page(s) 1
%% 
%% 
\documentclass[]{screxa}
\pagestyle{empty}
\setlength\textwidth{134.31393pt}
\setlength\parindent{0pt}
%StartShownPreambleCommands
\usepackage{amsmath}
%StopShownPreambleCommands
\begin{document}
\begin{flalign}
i_{11} &= 0.25\nonumber \\
i_{21} &= \frac{1}{3}i_{11}\\
i_{31} &= 0.33i_{22}
\end{flalign}
\end{document}
