怎么解三元一次方程组:3X+Y-4Z=13,5X-Y+3Z=5,X+Y-Z=3,||3X-Y+Z=10,X+2Y-Z=6,X+Y+2Z=17 ?
尽量用好理解的方法，谢谢3X+Y-4Z=13,5X-Y+3Z=5,X+Y-Z=3---------------------------------------------...
尽量用好理解的方法，谢谢
3X+Y-4Z=13,
5X-Y+3Z=5
,X+Y-Z=3
-----------------------------------------------
3X-Y+Z=10,
X+2Y-Z=6,
X+Y+2Z=17 展开
3X+Y-4Z=13,
5X-Y+3Z=5
,X+Y-Z=3
-----------------------------------------------
3X-Y+Z=10,
X+2Y-Z=6,
X+Y+2Z=17 展开
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