[tex]\displaystyle\bf\\\left \{ {{2x+3y=7 \ |\cdot 2} \atop {-5x+2y=11 \ |\cdot(-3)}} \right. \\\\\\+\left \{ {{4x+6y=14} \atop {15x-6y=-33}} \right. \\----------\\19x=-19\\\\x=-1\\\\2y=5x+11=5\cdot (-1)+11=-5+11=6\\\\y=6:2=3\\\\\\Otvet \ : \ (-1 \ ; \ 3)[/tex]