\documentclass[xcolor={table,svgnames}]{beamer}
\usefonttheme[onlymath]{serif}
\setbeamertemplate{navigation symbols}{}
\usepackage{ProfCollege90}

\begin{document}
\QFlash[Expression]{$2x+3$/$4x-1$/$3-2x$/$x$/$x=3$}
\end{document}