Монгол Бодлогын Сан

$\left\{% \begin{array}{l} \sin (3x+y)-\cos (x+3y)=-2\\ \sin^2(2x+2y)=1\\ \end{array} % \right.$ систем $\left\{ % \begin{array}{l} x=\dfrac{\fbox{ab}\pi}{\fbox{cd}}+\dfrac{\pi}{\fbox{e}}\left(\fbox{f}k+\fbox{gh}n\right) \\ y=\dfrac{\fbox{i}\pi}{\fbox{cd}}+\dfrac{\pi}{\fbox{e}}\left(\fbox{jk}k+\fbox{l}n\right) (n, k\in \mathbb Z) \\ \end{array} % \right.$ шийдтэй байна.