2a-3b+c=0·····················(1)式
3a-2b-6c=0····················(2)式
(1)+(2)有5a-5b-5c=0
则a=b+c``````````````````````````(3)式
(3)式代入(1)式有b=3c
则a=4c
所以a=4c,b=3c.c=c代入上式就行啦
2a-3b+c=0·····················(1)式
3a-2b-6c=0····················(2)式
(1)+(2)有5a-5b-5c=0
则a=b+c``````````````````````````(3)式
(3)式代入(1)式有b=3c
则a=4c
所以a=4c,b=3c.c=c代入上式就行啦