\documentclass{article}
\usepackage{xepersian}
\usepackage{mathabx,cases}
\settextfont{Yas}
\setdigitfont{Yas}
\begin{document}
\begin{table}
\caption{•}
\centering
\begin{tabular}{|c|c|}\hline
100 & 200 \\\hline
500 & 700 \\\hline
\end{tabular}
\end{table}
\[
R=2x+5 \Longrightarrow
\]
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\end{document}