Question

Помогите решить срочно ​

Answer 1

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