作业帮解方程组{3x+2y+z=6,x+3y+z=5,x+y+3z=9谢谢了,
解方程组{3x+2y+z=6,x+3y+z=5,x+y+3z=9谢谢了,
解方程组：x+y+z=4,x+y+2z=5,3x+y-z=6
解方程组2x+y-3z=1,x-2y+z=6,3x-y+2z=9求x,y,z的值
解方程组{z=x+y 3x-2y-2z=-5 2x+y-z=3
解方程组 z=x+y 2x-3y+2z=5 x+2y-z=3
解方程组{3x+y-z=4,2x-y+3z=12,x+y+z=6}
解三元一次方程组：x+y+z=6,y-z=4,x-y-2z=3,
解方程组x-2y=-9 y-z=3 2z+x=47
解方程组2x=3y=6z,x+2y+z=16
x:y:z=2:3:5解方程组 2x+3y-z=16
解方程组{6x=4y=3z,2x+y+z=22
解方程组：x+3y=5.y-2z=5.x+z=5