\documentclass{article}
\usepackage{amsthm,amsfonts}
\textwidth=6.25in
\textheight=9.5in
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\hoffset  -1in
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\begin{document}
\begin{flushright}
(Your Name)\\
Math 415A\\
(Homework Due Date)\\
\end{flushright}

\begin{center}
\Large\textbf{Homework 1}
\end{center}

\begin{enumerate}

\item[1.1] Your First Problem\\

\emph{Solution. } Your Solution...\\


\item[1.2] Your Second Problem

\begin{proof}
Your Proof...\\
\end{proof}

\end{enumerate}
\end{document}
