A over 2 -A over 5=A over 4+ 5
thx
方程式一問 4(詳列步驟)
2009-03-19 12:57 am
回答 (1)
2009-03-19 1:09 am
✔ 最佳答案
A/2 -A/5 = A/4 + 5(5A-2A) / 10 = (A+5*4) / 4
(3A) / 10 = (A+20) / 4
(3A)(4) = (A+20)(10)
12A = 10A + 200
12A-10A = 200
2A = 200
A = 200/2
A = 100
收錄日期: 2021-04-13 16:30:28
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20090318000051KK00873