Question

Решите $\left \{ {{2x+y-1=0} \atop {3x+2y+5=0}} \right.$

Answer 1

$\left \{ {{2x+y=1} \atop {3x+2y=-5}} \right.$
$\left \{ {{y=1-2x} \atop {3x+2y=-5}} \right.$
3x+2(1-2x)=-5
3x+2-4x=-5
-x=-7
x=7
y=1-2*7
y=-13
Ответ: (7;-13)