解方程组3x+y+z=6,x+3y+z=5,x+y+3z=9{3x+y+z=6{x+3y+z=5{x+y+3z=9
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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
3x-y+z=3,2x+3y-z=12,x+y+z=6解方程组
解方程组{3x+y-z=4,2x-y+3z=12,x+y+z=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
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
解三元一次方程组:x+y+z=6,y-z=4,x-y-2z=3,
方程组x+y=3 y+z=6 z+x=7的解
解方程组2x=3y=6z,x+2y+z=16
解方程组{6x=4y=3z,2x+y+z=22
方程组{x-y=3 y-z=6 x+z=7 }的解是
解方程组6x=4y=3z,x+y+z=18
解方程组3x+y+z=6,x+3y+z=5,x+y+3z=9{3x+y+z=6{x+3y+z=5{x+y+3z=9
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