求解!!!!! abc不等於0, 若ab:bc=7/2:7/6, 3ca:bc=3/10:0.2, 則a:2b:c=?

2016-08-16 7:53 am

回答 (1)

2016-08-16 8:07 am
Sol
ab:bc=7/2:7/6
ab:bc=3:1
a:c=3:1
3ca:bc=3/10:2/10
3a:b=3:2
a:b=1:2
 a b c
 3:  1
 1:2
────────────
 3:6:1
a:2b:c=3:12:1


收錄日期: 2021-04-30 21:44:27
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20160815235355AAa1RNT

檢視 Wayback Machine 備份