快进,急1.如果|x-5|=|z+y-5|=|x-z-3|=0,那么x=_______,y=________,z=___
已知x-y+z=0.3x+y-5z=0,则x+y+z/x+2y-3z=_______
(x+y-z)(x-y+z)=
如果{x+2y-8z=0 2x-3y+5z=0,其中xyz不等于零,那么x+y/z=
x/2=y/3=z/5 x+3y-z/x-3y+z
如果x+2y−8z=02x−3y+5z=0,其中xyz≠0,那么x:y:z=( )
1.已知x:y:z=4:5:7,求:(一)2x+3y+z/5z; (二)x+y/y+z 非常急,
如果|x+y+z-6|+|2x+3y-z-12|+|2x-y-z|=0求x,y,
C语言:int x=5,y=7,z; z=x>y?5>3?++x+y:x:++x-y++ 则z的值为________.
2x+2y+z=0 ,3x+5y+z=0,那么x+2y/x+y+z的值是
X+Y+Z=?
如果实数x、y、z满足关系式2x+3y-z=0①5x-2y-2z=0②那么x:y:z=( )
已知2x-4y-5z=0,-3x+y+4z=0,(xyz≠0)则x:y:z=________