解方程组{x+y=8,y+z=6,z+x=4 求mx+2y-z的2009次方=10,求 m

解方程组{x(x+y+z)=6,y(x+y+z)=12,z(x+y+z)=18 解方程组：{x(x+y+z)=6 {y(x+y+z)=9 {z(x+y+z)=10 解方程组x-y+z=0,3y-z=8,x+y=6 解方程组x-y-3z=4 3x+y-z=6 -x+3y+z=8 解方程组x-y-3z=4 3x+y-z=6 -x+3y+z=8 解三元一次方程组{x+y=8 y+z=6 z+x=4 解方程组 x+y+z=-7 x-y=12 x+y-z=6 解方程组x+y-z=0,2x+y+z=7,x-3y+z=8 解方程组{3x+y-z=4,2x-y+3z=12,x+y+z=6} 解方程组：{2x+y+z=2 x+2y+z=4 x+y+2z=6 解方程组2x+3y-z=12,3x-y+z=4,x+y+z=6 解方程组x+y+z=6 x+2y-3z=4 2x-y+z=5 3x-y+z=3,2x+3y-z=12,x+y+z=6解方程组 解方程组：x+y+z=4,x+y+2z=5,3x+y-z=6 x+y+z+2,4x+2y+z+2,9x+3y+z=6解方程组 方程组：{x+y-z=6,x+z=16,x-y+2z=17 解方程组:5x=8z.5y解方程组:5x=8z.5y=2z.x+2y+3z=2. 解三元一次方程组：x+y+z=6,y-z=4,x-y-2z=3,