5a+8=2a+20-3a
a=???
方程式???
2006-11-11 11:20 pm
回答 (4)
2006-11-11 11:38 pm
5a+8=2a+20-3a
8a+8=2a+20
6a+8=20
6a=12
a=2
8a+8=2a+20
6a+8=20
6a=12
a=2
收錄日期: 2021-04-12 18:06:17
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20061111000051KK02853