X+1/Y=4 Y+1\Z=1 Z+1/X=7\3 求XYZ

已知 x/(y+z)+y/(z+x)+z/(x+y)=1求 (x*x)/(y+z)+(y*y)/(x+z)+(z*z)/(x+y)=? 2|X-Y|+√2Y+Z+Z²-Z+1/4=0求X+Y+Z的值 x-z=-4 z-2y=-1 x+y-z=-1 怎么解 x-y-z=0 4x+8y+z=17 z=1 已知x,y,z满足 2倍(x-y的绝对值)+(2y的平方根)-z+(z×z)=-1/4,求x,y,z的值 {x+y-z=11 y+z-x=5 z+x-y=1 {x+y-z=11,x-y-z=-5,x-y+z=1 若实数XYZ满足2|x-y|+√2y+z+z方-z+1//4=0 求X+Y+Z 2y+z在根号里 x+y+z=6 x+2y+3z=14 y+1=z X/Y+Z=Y/X+Z+1=Z/X+Y-1=X+Y+Z,求x+y+z等于多少 已知实数x y z满足x/(x+1)=y/(y+2)=z/(z+3)=(x+y+z)/3,求x+y+z的值 已知实数x y z满足x/(x+1)=y/(y+2)=z/(z+3)=(x+y+z)/3,求x+y+z的值 x>=y>=z c语言x=3;y=z=4z>=y>=x 这个不是应该等于（z>y&&y=x)||(z>y&&y>x)||(z=y&&y>x)||(z=y&&y=x)这个难道不是1么 符合z=y&&y>x 若|x+3|+|y-2|+|2×z+1|=0求(x×z-y×z)(y-x+z)的值 5x+y+z=1 2x-y+2z=1 x+5y-z=4 x-y-z=1 2x+y-3z=4 3x-2y-z=-1 {x+2y+z=4,x+y+2z=-1,2x+y+z=1 解方程x-y+4z=5,y-z+4x=-1,z-x-4y=4