0.1X+3Y+6Z=100 X+y+z=100 怎么算出X.Y.Z的值,
x y z x+y--- = --- = ---- ----y+Z z+x x+y ,求 z 的值 .求 x+y----
已知x、y、z满足方程组:x+y-z=6;y+z-x=2;z+x-y=0 求x、y、z的值
(x+y-z)(x-y+z)=
x=3,y=4,z=5,求以下表达式的值,怎么算 (x && y)==(x || z) (x>y)+(y!=z) ||
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=3:4:5=6,求x-y+z分之x+y-z的值
若x:y:z=3:4:6,则x-y+z分之x+y-z的值为?
解方程组2x+y-3z=1,x-2y+z=6,3x-y+2z=9求x,y,z的值
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.