\documentclass{article}
\usepackage{amsthm,amssymb}
\usepackage[fleqn]{amsmath}
\usepackage{tikz}
\usetikzlibrary{calc}

\newcommand{\tikzmark}[1]{\tikz[baseline,remember picture] \coordinate (#1) {};}

\usepackage{mathtools}
\usepackage{xepersian}
\usepackage{xepersian-mathsdigitspec}
\settextfont[Scale=1.3]{B Nazanin}
\begin{document}

	
	\begin{align*}
	Approximate\begin{cases}\includegraphics[scale=0.2]{Shape-1} V_{c}=\upsilon_{c}b_{w}d \\ 
	\includegraphics[scale=0.2]{Shape-2}V_{c}=\upsilon_{c}b_{w}d(1+\dfrac{N_{u}}{12A_{g}})\\
    \includegraphics[scale=0.2]{Shape-3}V_{c}=\upsilon_{c}b_{w}d(1-\dfrac{N_{u}}{3A_{g}})
	\end{cases} 
	\end{align*}
\end{document}


\begin{equation}
2*\includegraphics{image1} + 3*\includegraphics{image2} = \includegraphics{image3}
\end{equatioon}