Question

х + у = 3

3х + 2у = 2

Answer 1

Ответ:

$x;y=[-4;7]$

Пошаговое объяснение:

$\left \{ {{x+y=3} \atop {3x+2y=2}} \right.\\\\\left \{ {{x=3-y} \atop {3x+2y=2}} \right.\\\\3(3-y)+2y=2\\9-3y+2y=2\\-y=2-9\\-y= -7\\y= 7\\\\\\x+7=3\\x=3-7\\x=-4 \\\\x;y=[-4;7]$