如果3/x+4=2/y+3=4/z+8,x+y+Z=12,x,y,z的值是多少?
x=y/z=z/3,x+y+z =12,求2x+3y+4z是多少,
如果x+4/3=y+z/2=z+8/4,且x+y+z=12,求x,y,z的值.
如果x+4/3=y+3/2+z+8/4,且x+y+z=12,求x,y,z的值.
如果3y=x+2y,那么x *x+9*y*y+4*z*z-6xy-12yz+4xz的值是多少?
已知x+y/2=y+z/3=z+x/4,且x+2y+z=12,求x-2y+z的值
已知4x-3y+z=0,x+2y-8z=0,xyz不等于0,求x+y-z/x-y+2z的值
x/3=y/4=z/5,求x+y+z/3x-2y+z的值,
若x/3=y/4=z/5,求x+y+z/3x-2y+z的值.
已知2x=3y=4z求2x-y+z分之x+y+z的值
已知x:y:z=2:3:4,且x-y+z=36,求x+y+z的值.
已知x/4=y/5=z/6 求x+y+z/3x-2y+z的值
已知x/4=y/5=z/6,求x+y+z/3x-2y+z的值.