x+3y-2z=5y+3z-2x=3 z+3x-2y=－4 变形得到：x+3y-2z=5....(1)-2x+y+3z=3 ..(2)3x-2y+z=－4 ..(3)(3)+(2)*2得到：-x+7z=2...(4)(1)-(2)*3得到：7x-11z=-4...(5)由（4）、（5）可得到：x=-3/19,z=5/19进而得到y=36/19.
