%% 
%%  Example 02-01-11 
%%  Copyright (C) 2016 Herbert Voss
%% 
%% ==== 
% Show page(s) 1
%% 
%% 
\documentclass[]{screxa}
\pagestyle{empty}
\setlength\textwidth{182.31393pt}
\setlength\parindent{0pt}
%StartShownPreambleCommands
\usepackage{amsmath}
%StopShownPreambleCommands
\begin{document}
\begin{flalign*}
                && 12(x-1)+20(y-3)+14(z-2) &= 0\\
\text{same as } &&               6x+10y+7z &= 0
\end{flalign*}
\end{document}
