解方程组2x+3y+z=6 x-y+2z=-1解方程组2x+3y+z=6 x-y+2z=-1 x+2y-z=5

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解方程组2x+3y+z=6 x-y+2z=-1解方程组2x+3y+z=6 x-y+2z=-1 x+2y-z=5
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解方程组2x+3y+z=6 x-y+2z=-1解方程组2x+3y+z=6 x-y+2z=-1 x+2y-z=5
解方程组2x+3y+z=6 x-y+2z=-1
解方程组2x+3y+z=6 x-y+2z=-1 x+2y-z=5

解方程组2x+3y+z=6 x-y+2z=-1解方程组2x+3y+z=6 x-y+2z=-1 x+2y-z=5

5/2 1/2 -3/2过程

x+y+z+2,4x+2y+z+2,9x+3y+z=6解方程组 3x-y+z=3,2x+3y-z=12,x+y+z=6解方程组 解方程组x+y+z=6 x+2y-3z=4 2x-y+z=5 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=4,x+y+2z=5,3x+y-z=6 解三元一次方程组:x+y+z=6,y-z=4,x-y-2z=3, 解方程组2x=3y=6z,x+2y+z=16 解方程组{6x=4y=3z,2x+y+z=22 解方程组 x+y-z=6 〈1〉{x-3y+2z=1解方程组 x+y-z=6 〈1〉{x-3y+2z=1 3x+y-z=4 解方程组:2x-y+z=6.-3x+2y-z=-9.x+y-2z=-1求解 解三元一次方程组:x+y+z=6,y:z=2:3,3x-z=0 解三元一次方程组 ①2x-y+z=1 3x+y -2z=2 X+2y-z=3 ②x-4y+z=-3 2x+Y-Z=18 X-Y-Z=7 ③4x+4y+2z=7 6X-4y-z=6 2x-y+z=1 解方程组:{2x+y+z=2 x+2y+z=4 x+y+2z=6 解方程组:2x+y+z=-4 x+2y+z=-2 x+y+2z=3 解方程组 z=x+y 2x-3y+2z=5 x+2y-z=3 解方程组{z=x+y 3x-2y-2z=-5 2x+y-z=3 解方程组 x+y+z=2 x-2y+z=-1 x+2y+3z=-1