解方程组:2X=3Y Y=2Z X+2Y+Z=16
解方程组:2X=3Y Y=2Z X+2Y+Z=16
解方程组:2x-y+z=6.-3x+2y-z=-9.x+y-2z=-1求解
x:y:z=2:3:5解方程组 2x+3y-z=16
解方程组2x=3y=6z,x+2y+z=16
解方程组:2x+y+z=15 x+2y+z=16 x+y+z=17
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:x-2y+z=-1,x+y+z=2,x+2y+3z=-1
解方程组{2x+3y+z=11,x+y+z=0,3x-y+z=-2.
解方程组{3x+y-z=4,2x-y+3z=12,x+y+z=6}
解方程组x-4y+z=-3,2x+y-z=18,x-y-z=7.
x+y/2=z+x/3+y=z/4,...x+y+z=27.解方程组.