%% 
%%  Example 02-01-9 
%%  Copyright (C) 2016 Herbert Voss
%% 
%% ==== 
% Show page(s) 1
%% 
%% 
\documentclass[]{screxa}
\pagestyle{empty}
\setlength\textwidth{328.62788pt}
\setlength\parindent{0pt}
%StartShownPreambleCommands
\usepackage{amsmath}
%StopShownPreambleCommands
\begin{document}
\begin{flalign}
i_{11} &= 0.25              & i_{12} &= i_{21}     & i_{13} &= i_{23}\nonumber \\
i_{21} &= \frac{1}{3}i_{11} & i_{22} &= 0.5i_{12}  & i_{23} &= i_{31}\\
i_{31} &= 0.33i_{22}        & i_{32} &= 0.15i_{32} & i_{33} &= i_{11}
\end{flalign}
\end{document}
