Question

В1. Решите систему уравнений

Answer 1

$left { {{y=-2x} atop {3x-2y=-7}} right. left { {{y=-2x} atop {3x-2(-2x)=2}} right. left { {{y=-2x} atop {3x+4x=2}} right. left { {{y=-2x} atop {7x=7}} right. left { {{y=-2x} atop {x=1}} right. left { {{y=-1} atop {x=1}} right.$
ответ: x= 1, y=-1