问题描述:
解三元一次方程组(要过程) (1)5x-3y+z=2 (2)x+y=-2 5x+2y-4z=3 x+z=13 -5x+y-z=2 y+z=1 看下面:
(3)x-y-z=-1
3x+5y+7z=11
4x-y+2z=-1
(1)5x-3y+z=2 5x+2y-4z=3 -5x+y-z=2
(2)x+y=-2 x+z=13 y+z=1
(3)x-y-z=-1 3x+5y+7z=11 4x-y+2z=-1
(3)x-y-z=-1
3x+5y+7z=11
4x-y+2z=-1
(1)5x-3y+z=2 5x+2y-4z=3 -5x+y-z=2
(2)x+y=-2 x+z=13 y+z=1
(3)x-y-z=-1 3x+5y+7z=11 4x-y+2z=-1
问题解答:
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