x+100=y,z+200=x,3x+3y+6z=50236求解
2x+3y+z=11,3x+y-z=2,x+y+z=6求解
求解三元一次方程组:{x+y/2=y+z/3=z+x/4 x+y+z=27
x+y+z=4 x-2y+z=-2 x+2y+3z=0求解
试证明(x+y-2z)+(y+z-2x)+(z+x-2y)=3(x+y-2z)(y+z-2x)(z+x-2y)
如果|x+y+z-6|+|2x+3y-z-12|+|2x-y-z|=0求x,y,
(x+y-z)(x-y+z)=
求解三元一次方程组{2x+4y+3z=9 3x-2y+5z=11 5x-6y+7z=13}
x/2=y/3=z/5 x+3y-z/x-3y+z
若{x+3y+10z=0 则 (x+y-z)/(x-y+z)
3/x=6/y=8/z { 3x+5y-6z=-18 求解三元一次方程
已知3X=4X,5Y=6Z求X+Y:Y+Z
三元一次方程求解:①x+2z=3,2x+y=2,2y+z=7.②x+y+z=2,3x-y-4z=5,2x+3y-2z=0