4x-3y-z=16,2x+2y+3z=8,x=4y=5z=3的解

(4x-2y-z)-{5x[8y-2y-(x+y)]-x+(3y-10z)]=? kuai 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. 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. 解方程组：x+y+z=4,x+y+2z=5,3x+y-z=6 试证明(x+y-2z)+(y+z-2x)+(z+x-2y)=3(x+y-2z)(y+z-2x)(z+x-2y) 已知x+4y+3z=3x-2y-5z=0,求x+2y-z/2x-3y+7z的值 2x+3y-4z=0.,3x+4y+5z=0,则x+y+z/x-y+z详细的解题过程 已知{3x+4y+5z=0,2x+3y-4z=0,求x+y+z/x-y+z的值. 已知2x+3y-4z=0,3x+4y+5z=0,求x+y+z/（除以）x-y+z的值. 已知2x+3y-4z=0,3x+4y+5z=0,求x+y+z/x-y+z的值.