- 1/2x - 1/3xy =?
- 4m-5/8m square + -4/12m =?
- 1/a + 3/ 20ab =?
- 2/3x + 1/6xy =?
- 3/b - b-3/2b square =?
** Square = 二次方
收錄日期: 2021-04-12 19:04:38
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20061106000051KK03822