X+2Y+3Z=11 X-Y+7X=10 X+3Y+2Z=2的解是什么

{x+2y+3z=11,x-y+7z=10,x+3y+2z=2 (4x-2y-z)-{5x-[8y-2z-(x-2y)]-x-(3y-10z)}=? 已知(x+y)(x+z)=x,(y+z)(y+x)=2y,(z+x)(z+y)=3z,求x,y,z 试证明(x+y-2z)+(y+z-2x)+(z+x-2y)=3(x+y-2z)(y+z-2x)(z+x-2y) x+2y+3z=14 2x+y+z=7 3x+y+2z=11 x+2y+4z=17 2x+y+z=7 3x+y+2z=11 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 x-y-z=-1 3x+5y+7z=11 4x-y+2z=-1 分别求出x=?y=?z=? 三元一次方程 X-y-z=-1 3x+5y+7z=11 4x-y+2z=-1 X=?Y=?Z=? x+2y+3z=14 2x+y+z=7 3x+y+2z=11 求x y z x+2y+3z=14 2x+y+z=7 3x+y+2z=11 求x y z 已知4x-3y-6z=0,x+2y-7z=0,求5x+2y-z/2x-3y-10z 2x+y-z=10 ,x+3y+2x=14 ,3x-y-2z=7 已知,方程组:4x-3y-7z=0 x+2y=10z 则(x-y+z)÷(x+y+z)=—— (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