麻煩你們幫幫我:
解方程:
1/9(h+9)=5/6-1/2(h+7)
收錄日期: 2021-04-13 13:35:51
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20070922000051KK03063