{x+2y+2=0 (1)
{7x-4y=-41 (2)
(1)*7=7x+14y+14=0 (3)
(3)-(2)=18y=27
y=3/2
将y=3/2代入x+2y+2=0
得x=-5
所以x=-5 y=3/2 {x+2y+2=0 (1)
{7x-4y=-41 (2)
(1)*7=7x+14y+14=0 (3)
(3)-(2)=18y=27
y=3/2
将y=3/2代入x+2y+2=0
得x=-5
所以x=-5 y=3/2