%% 
%%  An UIT Edition example
%% 
%%  Example 03-04-5 on page 24.
%% 
%%  Copyright (C) 2010 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[leqno]{exaarticle}
\pagestyle{empty}
\setlength\textwidth{225.70511pt}
\setlength\parindent{0pt}
\setcounter{equation}{16}
\addtolength\textwidth{-12mm}
\renewcommand\theequation{3.\arabic{equation}}\setlength\parskip{1ex plus 0.2ex}
\StartShownPreambleCommands
\documentclass[leqno]{article}
\StopShownPreambleCommands
\begin{document}
Normal text on the line, which
is wrapped at some point.
%
\begin{equation}f(x)=x^2 +x-1
\end{equation}
\begin{equation}g(x)=\frac{x^2}{x+1}
\end{equation}
\begin{equation}h(x)=\mathrm{cosh}(x-1)
\end{equation}
%
Again normal text on the line.
\end{document}