若x=3y,y+4z=0(y≠0),则z分之x的值为
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
若x:y:z=3:4:6,则x-y+z分之x+y-z的值为?
1,已知2分之x=3分之y=4分之z≠0,求x+y+z分之2x+y-z的值
若x:y:z=3:4:5=6,求x-y+z分之x+y-z的值
若2x+5y-4z=0,3x+9y-7z=0,则x+y-z的值为
若x/2=y/3=z/4不等于0,求x+y+z/x+y-z的值
若xyz≠0,且x分之y+x=y分之z+x=z分之x+y,求xyz分之(y+z)(z+x)(x+y)的值
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
已知x=3y,z=7y(x≠0),求代数式2x+3y-z分之x+y+z的值
若{x+3y+10z=0 则 (x+y-z)/(x-y+z)
已知3分之x=4分之Y=6分之Z不等于0,求X-Y+Z分之X+Y-Z的值
已知x+y-3z=0.x-y-z=0,求3x+2y-z分之x+y+z的值.