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%%  Ein Beispiel der DANTE-Edition
%%  Mathematiksatz mit LaTeX
%%  3. Auflage
%%  Beispiel 03-01-7 auf Seite 21.
%%  Copyright (C) 2018 Herbert Voss
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%%  It may be distributed and/or modified under the conditions
%%  of the LaTeX Project Public License, either version 1.3
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\begin{document}
\begin{eqnarray}
\textrm{rechtsbündig} & \textrm{mittig} & \textrm{linksbündig}\label{eq:eqnarray}\\
\frac{1}{\sqrt{n}} & \frac{\sqrt{n}}{n} & \frac{n}{n\sqrt{n}}
\end{eqnarray}
\end{document}