a) (8-y)
 ̄  ̄ ̄ ̄ 呢條係來咪要將負号上下乘入去??
﹝4﹞
b) 8–y
 ̄  ̄ ̄ 咁呢題個負号又應該是乘上or下???
4
我搞唔清呢類分數,唔該教下我???
收錄日期: 2021-04-13 15:09:12
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20080216000051KK00926