Question

СРОЧНОООООООООо0оооо​

Answer 1

Ответ:      (x,y)=(2,1)

$\left \{ {{y=3-x} \atop {2x-y=3}} \right. =2x-(3x)=3\\x=2\\y=3-2\\y=1\\(x,y)=(2,1)\\\left \{ {{2+1=3} \atop {2*2-1=3}} \right. =\left \{ {{3=3} \atop {3=3}} \right. =(x,y)=(2,1)$