朋朋有$2硬幣和$5硬幣共12個,總值是$39.
$2硬幣和$5硬幣有多x?
收錄日期: 2021-04-12 23:19:25
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20070123000051KK04712