若实数x,y,z满足3x+7y+z=1,4x+10y+z=2005,求分式x+3y/2004x+2004y+2004z的
已知实数x,y,z满足x/(y+z)+y/(z+x)+z/(x+y)=1,求x2/(y+z)+y2/(z+x)+z2/(
已知x,y,z满足3x+7y+z=5 4x+10y+z=3 求x+y+z的值
已知x、y、z满足{3x+7y+z=5 ,求x+y+z的值 {4x+10y+z=3
对满足(x+y)/2=(y+z)/3=(z+x)/7的任意实数x,y,z
已知实数x、y、z满足x+1/y=4,y+1/z=1,z+1/x=7/3,求xyz的值
已知实数x,y,z满足关系式2x-3y-z=0,x-2y+z=0,求x比y比z的值
x,y,z属于正实数,且3x+4y+5z=1 求1/(x+y)+1/(y+z)+1/(x+z)的最小值
若实数x,y,z满足x+y+z=5,xy+yz+xz=3,求z的最大值
若实数x,y,z满足x+y/1=4,y+z/1=1,z+x/1=3/7,则xyz的值为多少
一条分式数学题已知x y z满足x/x+y + y/z+x + z/x+y =1,求x²/x+y + y&su
若有理数x、y、z满足等式(x-1)^2+(2x-y)^4+|x-3z|=0,求x、y、z的值
若xyz不等于0,且满足(y+z)/x=(x+z)/y=(x+y)/z,求(y+z)(x+z)(x+y)/xyz的值