媽媽買了橙和蘋果共12個,付款29元,已知橙每個比蘋果貴1元,問媽媽各買了橙和蘋果多少個?(請詳列方程計算)
唔該要快,要做功課!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
收錄日期: 2021-04-23 21:45:53
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20070428000051KK04520