{2x+y+Z=15,x+2y+Z=16,x+y=2Z=17.解方程组
解方程组:2x+y+z=15 x+2y+z=16 x+y+z=17
如何解方程组(x+2y)(x+2z)=-16,(y+2z)(y+2x)=8,(z+2x)(z+2y)=-7
已知x、y、z满足方程组:x+y-z=6;y+z-x=2;z+x-y=0 求x、y、z的值
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{x:y:z=1:2:3 {2x+y-3z=15
解方程组{z=x+y 3x-2y-2z=-5 2x+y-z=3
解方程组:x-2y+z=-1,x+y+z=2,x+2y+3z=-1
解方程组 z=x+y 2x-3y+2z=5 x+2y-z=3
解方程组2x+y-z=7 x+y+z =1 2x-y-z=5
解方程组x-4y+z=-3,2x+y-z=18,x-y-z=7.
解方程组{2x+3y+z=11,x+y+z=0,3x-y+z=-2.