|x-6|+|3y-8|+|z-2|=0,求x+3y+z的值

三元一次方程x-y+z=6 x+y-z=0 2x+3y+8z=33 已知x-y/x+y=y+z/2(y-z)=z+x/3(z-x),求证8x+9y+5z=0THX.. 如果|x+y+z-6|+|2x+3y-z-12|+|2x-y-z|=0求x,y, |x-6|+|3y-8|+|z-2|=0,求x+3y+z的值 ①x+y+z=6 3x-y+2z=12 x-y-3z=-4 ②x+y-z=2 4x-2y+3y+8=0 x+3y-2z-6=0③x/3=y/2 y/4=z/5 x+y+z=60三元一次方程 三元一次方程x+y+z=0 4x+2y+z=3 9x+3y+z=6x+y+z=04x+2y+z=3 9x+3y+z=6 (1)X+Y=15,Y+Z=-6,Z+X=7.(2)X+Y=-14,Y+Z=-7,Z+X=9.(3)X+Y=0,Y+Z=-1,Z+X=-1. 证明 ：x/(y+z)+y/(z+x)+z/(x+y)>=3/2其中 x,y,z>0 X+y-z=6;x-3y+2z=0;3x+2y-z=4 x-y+z=0,2x+y-2z=6,3x-y-z=3求解, {x+y-2z=-3 2x+6y+z=2 x+y+z=0 三元一次方程 X+Y+Z=6 2X+3Y-Z=4 3X-Y+Z=8 {x+y+z=0 4x+2y+z=3 9x+3y+z=6 {x+y+z=0 {4x+2y+z=3 {9x+2y+z=6 解三元一次方程：x+y-z=0,2x+y+z=7,x-3y+z=8 解方程组x+y-z=0,2x+y+z=7,x-3y+z=8 1.{x:y:z=3:4:5 2x+3y-5z=-142.{x-y-z=-1 3x+5y+7z=11 4x-y+2z=-13.{x+y=1 x+z=0 2x+y+2z=44.{x-y+z=-3 2x-y-z=-2 -3x+y+z=-15.{x-y+z=-3 3x+y-4z=6 2x+y-z=36.{x-2y+5z=16 2x+y-5z=7 2x-y+z=38 已知方程组{2x-3y+z=0 且x*y*z不等于0 求 x：y：z {3x-2y-6z=0