Срочно решите математика

Решите задачу:

$\left \{ {{2y-x=6} \atop {9^{2x+y}=3^{2-3y}}} \right. \; \left \{ {{x=2y-6} \atop {3^{4x+2y}=3^{2-3y}}} \right. \; \left \{ {{x=2y-6} \atop {4x+2y=2-3y}} \right. \; \left \{ {{x=2y-6\, |\cdot (-4)} \atop {4x=2-5y}} \right. \; \oplus \\\\ \left \{ {{x=2y-6} \atop {0=-13y+26}} \right. \; \left \{ {{x=-2} \atop {y=2}} \right. \\\\Otvet:\; \; (-2,2)\; .$