Find a:b:c
2a=3b=8b=9c
=?
Find a:b:c
find the unknown value in each of the following:
6:y=5:4
收錄日期: 2021-04-13 00:49:57
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20070715000051KK04174