4x+6y+z=200 x+y+z=100 正整数

解方程组：{x(x+y+z)=6 {y(x+y+z)=9 {z(x+y+z)=10 14x+4y+z=200,x+y+z=100求解x,y,z (x+y-z)(x-y+z)= 若X+6Y+4Z=10 4X+4Y+Z=15求X+Y+Z {2x+3y-4z=-5 x+y+z=6 x-y+3z=10 x+y+z=4 2x+3y-z=6 3x+2y+2z=10 三元一次方程组,1.x-2y+z=9 2x+y+3z=10 3x+2y1.x-2y+z=92x+y+3z=103x+2y-z2.3x-5y+2z=14x+5y-z=5X-5y+3z=-23.7x+2y-z=76x-y+z=74x+3y+z=94.4x+3y-2z=-75x-6y+z=12x+z=-25.2x+3y-4z=-23x-2y+5z=262x+5z=31 方程组{x/2+y/3-z=-5,x/3-y/2+z/2=10,x/2-y/3-z/4=6,求x,y,z 2x+z=10 x+y-z=4 3x-y-z=0 已知4x-3y-6z=0,x+2y-7z=0,求5x+2y-z/2x-3y-10z x+y+z=4x-5y=y-x+6z,xyz不等0,x:y:z=? (4x-2y-z)-{5x-[8y-2z-(x-2y)]-x-(3y-10z)}=? 6x-y-z=3 2x-4y+8z=5 3x-6y-z=10 y z 分别等于几?大虾 X+Y+Z=? x/y=(x+z)/(y+z)y/z=(x+y)/(x+z) 3x-y+z=4,2z+3y-z=12,x+y+z=6的解 已知 x/(y+z)+y/(z+x)+z/(x+y)=1求 (x*x)/(y+z)+(y*y)/(x+z)+(z*z)/(x+y)=? 解三元一次方程组：(1)x+2y+3z=11x-y+4z=10x+3y+2z=2(2)x:y=3:5y:z=5:6x+y+2z=40(3)x+y-z=2y+z-x=4z+x-y=6谢谢!