解方程组:x:y:z=1:2:3;x+y+z=12,求,x,y,z的值
解方程组2x+y-3z=1,x-2y+z=6,3x-y+2z=9求x,y,z的值
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
方程组{4x-3y-3z=0,x-3y+z=0,(x.y.z不等于0),求x/z和y/z的值?
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
已知{x:y:z=1:2:3,x+y+z=12,求x、y、z的值
已知x,y,z满足方程组:4x-5y+2z=o;x+4y-3x=0,求x:y:z的值
解二元一次方程组X:Y:Z=1:2:3,X+Y+Z=12
已知XYZ满足方程组 X+Y-Z=6 Y+Z-X=2 Z+X-y=0 求X Y Z的值
已知x.y.z满足方程组x+2y-4z=0 2x+y-5z=0 求x:y:z的值
解方程组{3x+y-z=4,2x-y+3z=12,x+y+z=6}
解方程组:x-2y+z=-1,x+y+z=2,x+2y+3z=-1
解方程组{x(x+y+z)=6,y(x+y+z)=12,z(x+y+z)=18