{3(x-1)=4(y-4)
{5(y-1)=3(x+5)
我唔明點做!!你地教我做la ths!!
收錄日期: 2021-04-25 22:23:09
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20080301000051KK02567