设{X=3Y ,Y+4Z=0(Y不等于0),则X/Y=
x分之y+z=y分之z+x=z分之x+y(x+y+z不等于0),求x+y+z分之x+y-z
设x=3y/y+4z=0 (y不等于零)则x除以Z=( ) A 12 B -12分之1 c ...
已知x,y,z满足{4x-3y-3z=0,x-3y+z=0.(x不等于0,y不等于0,z不等于0)求x/z和y/z的值
已知方程组4x-y+3z=0 2x+y+6z=0且xyz不等于0,则x/y+y/z+z/x是多少
已知4x-3y-3z=x-3y+z=0(x、y、z不等于0)
若x/2=y/3=z/4不等于0,求x+y+z/x+y-z的值
已知x+y-z/z=x-y+z/y=-x+y+z/x,且xyz不等于0,求分式[(x+y)(x+z)(y+z)]/xyz
x/3=y/4=z/5=k (k不等于0)则x+y+z/x=
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?
4x-3y-3z=0 x-3y+z=0 并且X Y Z不等于0 求x:z 和y:z的值
已知方程组4x-3y-3z=0 x+3y+z=0(xyz不等于0),求x/y y/z的值
若5分之x=4分之y=3分之z(z不等于0),则3x-2y分之x+y+z的值为