\documentclass[12pt,oneside]{book}
\usepackage{amsmath}
\usepackage{tabularx}
\usepackage{bigdelim}
\usepackage{multirow}
\usepackage{xepersian}
\settextfont{Yas}
\setlatintextfont{Times New Roman}
\begin{document}


\[\left\{
 \begin{array}{lr}
  cccccccccc & \refstepcounter{equation}(\theequation)\\
  ddddddddddd& \refstepcounter{equation}(\theequation)
 \end{array}\right.
 \]
 
 
 \begin{tabularx}{\linewidth}{rXc}
 \ldelim\{{3}{2.75cm}[some text here]
 &  $hhhhhh$ & \refstepcounter{equation}(\theequation)\\
& $jjjjjjjjjjj$& \refstepcounter{equation}(\theequation)
 \end{tabularx}







\end{document}