求方程组 3x-2y+z=16 x+4y+3z=3 5x+2y-2z=24
已知方程组4x-5y+2z=0 x+2y=3z 则x:y:z
解方程组:x+y+z=4,x+y+2z=5,3x+y-z=6
已知x,y,z满足方程组:4x-5y+2z=o;x+4y-3x=0,求x:y:z的值
方程组:x-2y+4z=0,2x+3y-3z=0...xyz不等于0,求(2x+y-z)\(2x-y+z)
x/2=y/3=z/4 x+y+z=18 求方程组解
已知方程组2x-3y-4z=0和x+y+z=0,并且z≠0,求x:y与y:z
x:y:z=2:3:5解方程组 2x+3y-z=16
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.