x+y+z=-4.(1)x-y+z=0.(2)4x+2y+z=-3.(3)(1)+(2),得:2x+2z=-4x+z=-2.(4)(2)×2,得:2x-2y+2z=0.(5)(3)+(5),得:6x+3z=-32x+z=-1.(6)(6)-(4),得:x=1带入(4),得:z=-3带入(3),得:y=-2因此:x=1y=-2z=-3...