10X+Y+1/3Z=10Y+X 10X+Y+2/3Z=100X+Y

10X+Y+1/3Z=10Y+X 10X+Y+2/3Z=100X+Y (4x-2y-z)-{5x-[8y-2z-(x-2y)]-x-(3y-10z)}=? (x+y+z)÷10=x+1.1 y+x=z-80+y-1 z-y=8x+y+8 x+z÷y=? ｛3x-2y+z=-1 2x+y-3z=10 x-y-2z=1 [3x+2y+z=14,x+y+z=10,2x+3y-z=1] 3x+2y+z=4 x+y+z=10 2x+3y-z=1 3x+2y+z=14 { x+y+z=10 2x+3y-z=1 4x+y+z=-3 2x+3y-4z=-10 x+2y-z=-1 3x+2y+z=14 ,x+y+z=10,z+2x+3y=1 5 2x+3y+z=8 4x-y-z=10 x+2y-z=1 (4x-2y-z)-{5x[8y-2y-(x+y)]-x+(3y-10z)]=? kuaihuajian X=3z X+y+z=12 X+2y-2z=10 2x+z=10 x+y-z=4 3x-y-z=0 X/10=Y/8=Z/9,则X+Y+Z/2Y-3Z 3X+2y+z=20 x+y+z=10 Y=3X {2x+y=10 {x-y+z=4 {3x-y-z=0 (4x-2y-z)-{5x-[8y-2z-(x+y)]-2(3y-10z)}=?好难啊 解方程组：{x(x+y+z)=6 {y(x+y+z)=9 {z(x+y+z)=10