%%
%% Ein Beispiel der DANTE-Edition
%% Mathematiksatz mit LaTeX
%% 3. Auflage
%% Beispiel 06-14-2 auf Seite 124.
%% Copyright (C) 2018 Herbert Voss
%%
%% It may be distributed and/or modified under the conditions
%% of the LaTeX Project Public License, either version 1.3
%% of this license or (at your option) any later version.
%% See
http://www.latex-project.org/lppl.txt for details.
%%
%% ====
% Show page(s) 1
%%
%%
\documentclass[10pt]{screxa}
\pagestyle{empty}
\setlength\textwidth{352.81416pt}
\AtBeginDocument{\setlength\parindent{0pt}}
\setcounter{equation}{72}
\renewcommand\theequation{6.\arabic{equation}}
%StartShownPreambleCommands
\usepackage{amsmath}
%StopShownPreambleCommands
\begin{document}
\begin{flalign*}
&& 12(x-1) + 20(y-3) + 14(z-2) &= 0 &&\\
\text{und} && 6x + 10y + 7z -50 &= 0 &&
\end{flalign*}
%
\begin{align}
&& 12(x-1) + 20(y-3) + 14(z-2) &= 0\\
\text{und} && 6x + 10y + 7z - 50&= 0
\end{align}
\end{document}
