Question

Реши систему уравнений 2x+3y =-3x 6x+12y =-6

Answer 1

2x+3y =-3x 5x+3y=0 -5-10y+3y=0 7y=-5 y=-5/7
6x+12y =-6 x+2y=-1 x=-1-2y x=-1+10/7=3/7
{3/7;-5/7}