-x/2=y/3=z/4=3则3x+4y+6z的值是
4x-3y-6z=0,x+2y-7z=0是一个方程组,那么x-y+z/x+y+z的值等于
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.
若x:y:z=3:4:6,则x-y+z分之x+y-z的值为?
已知3x+2y=4+z,2x+2z=6+y,问是否存在x、y、z的正整数值,使得x+y+z
已知x::y:z=3:4:5,(1)求x+y分之z的值;(2)若x+y+z=6,求x,y,z.
已知x^3+y^3-6x+2y+z+3+10=0,求(x-y+z)(x+y-z)的值.(z+3)是绝对值
已知4x-3y-6y=0,x+2y-7z=0.求x-y+z\x+y+z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.
-x/2=y/3=z/4=3则3x+4y+6z的值是
若x:y:z=3:4:5=6,求x-y+z分之x+y-z的值