已知方程组a-2b+3c=o,2a+3b-8c=0,且abc不等于0,则a:b:c的值为
问题描述：
已知方程组a-2b+3c=o,2a+3b-8c=0,且abc不等于0,则a:b:c的值为
答
a-2b+3c=o,(1)
2a+3b-8c=0 (2)
(2)-(1)*2:
7b=14c
b=2c
带入a=2b-3c=2*2c-3c=c
a:b:c=c:2c:c=1:2:1