0,\; x_2+y_2=2=3=5>0\\\\2x_1+y_1=-2+6=4,\\\\2x_2+y_2=4+3=7\\\\Otvet;\; 4,7." alt=" \left \{ {{3y-x^2=13-4x} \atop {y=5-x}} \right. \; \left \{ {{3(5-x)-x^2=13-4x} \atop {y=5-x}} \right. \; \left \{ {{x^2-x-2=0} \atop {y=5-x}} \right. \; \left \{ {{x_1=-1,x_2=2} \atop {y_1=6,y_2=3}} \right. \\\\x_1+y_1=-1+6=5>0,\; x_2+y_2=2=3=5>0\\\\2x_1+y_1=-2+6=4,\\\\2x_2+y_2=4+3=7\\\\Otvet;\; 4,7." align="absmiddle" class="latex-formula">