\documentclass{article}
\usepackage{amsmath}
\usepackage{xepersian}
\begin{document}
\begin{align*}
& X_1 = \lambda_{11}F_1+\dots+\lambda_{1m}F_m+e_1 \\
& X_2 = \lambda_{21}F_1+\dots+\lambda_{2m}F_m+e_2 \\
& \vdots \\
& X_n = \lambda_{n1}F_1+\dots+\lambda_{nm}F_m+e_n \\
\end{align*}
\end{document}