\documentstyle[11pt]{article}
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\addtolength{\oddsidemargin}{-.5in}
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\addtolength{\textwidth}{1in}
% no page numbers
\pagestyle{empty}
% counter for page numbers
\newcounter{pg}
\setcounter{pg}{2}

% DEFINE THE PROBLEM SET NUMBER
\def\psnum{9}

% title command
\newcommand{\mytitle}[1]{\begin{center} {\Large 6.003 Problem Set \psnum --
Juliet Bourne -- #1 -- TA R. Kim} \\ \rule{6in}{.5mm} \end{center}}
% problem command
\newcommand{\prob}[1]{\vspace{.15in}{\noindent\large\bf Problem #1} \par
\vspace{-.1in} \noindent\rule{2in}{.1mm}}
% subproblem command
\newcommand{\subprob}[1]{\vspace{.15in} \noindent{\large\bf #1.}}
% equations commands
\newcommand{\beq}{\vspace*{-.3in}\begin{eqnarray*}}
\newcommand{\eeq}{\end{eqnarray*}}
% newpage setup command 
\newcommand{\mynewpage}{\newpage\noindent
\begin{center}
{\Large 6.003 Problem Set \psnum -- Juliet Bourne -- {\bf Page \thepg}}
\rule{6in}{.5mm}
\end{center}
\addtocounter{pg}{1}}
% see-page command
\newcommand{\seepage}{\noindent See page \rule{.2in}{.1mm} for the
computer output.}

\begin{document}

\mytitle{5/11/90}

\prob{12.7 CSAS}

\prob{12.9 CSAS}

\prob{16.5 CSAS}

\prob{17.15 CSAS}

\prob{18.1 CSAS}

\prob{18.2 CSAS}

\end{document}


