解5X+6Y+2Z=80 4X-3Y+Z=16 3X-2Y+6Z=92
解方程组:x+y+z=4,x+y+2z=5,3x+y-z=6
解方程组:5x+6y+2z=80 和 4x-3y+z=16 和 3x-2y+6z=92
解5X+6Y+2Z=80 4X-3Y+Z=16 3X-2Y+6Z=92
1.x+y=16,y+z=12,z+x=102.3x-y+z=4,2x+3y-z=12,x+y+z=63.x+y+z=6
解方程组{3x+y-z=4,2x-y+3z=12,x+y+z=6}
解方程{3x -y+z=4 2x+3y-z=12 x+y+z=6
{2x+3y-4z=-5 x+y+z=6 x-y+3z=10
2x+5y+4z=6,3x+y-7z=-4,x+y-z=?
已知2x+5y+4z=6 3x+y-7z=-4求x+y-z
5x+3y+2z=2011 4x+6y+7z=2012 求x+y+z
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.