1-2[3-(x/2-1)]=x/4+1
1/6[1/2(1-2n)+1/3]=n/3
I want the steps plx
收錄日期: 2021-05-03 11:42:40
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20071014000051KK05774