Solve the system of differential equations $$ \begin{array}{1} \left\{\begin{array}{1} X^{\prime} =13 x-30 y y^{\prime}=9 x-20 y \end{array} ight. " X(0)=11, \quad y()=6 \end{array} $$ $$ \begin{array}{1} X(t)= 1 y(t)= \end{array} $$ CS.JG.071