為何分數相除，相當於把除數的分子分母顛倒
回答 (2)
2011-10-10 5:17 am
✔ 最佳答案
a÷b/c=a÷(b×1/c)
=a÷b÷1/c
=a×1/b×c
=a×c/b
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2011-10-10 5:11 am
EXP:a/b ÷ c/d
= a/b ×d/c(移除作乘)
= a/b ×d/c(移除作乘)
收錄日期: 2021-04-13 18:17:21
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20111009000051KK01065