$\left\{\begin{matrix}X=-\frac{\sqrt{3}\left(3-y\right)}{3x}\text{, }&x\neq 0\\X\in \mathrm{C}\text{, }&y=3\text{ and }x=0\end{matrix}\right.$

$\left\{\begin{matrix}x=-\frac{\sqrt{3}\left(3-y\right)}{3X}\text{, }&X\neq 0\\x\in \mathrm{C}\text{, }&y=3\text{ and }X=0\end{matrix}\right.$

$\left\{\begin{matrix}X=-\frac{\sqrt{3}\left(3-y\right)}{3x}\text{, }&x\neq 0\\X\in \mathrm{R}\text{, }&y=3\text{ and }x=0\end{matrix}\right.$

$\left\{\begin{matrix}x=-\frac{\sqrt{3}\left(3-y\right)}{3X}\text{, }&X\neq 0\\x\in \mathrm{R}\text{, }&y=3\text{ and }X=0\end{matrix}\right.$