(+9)+(-2)
=?
有事幫忙數學問題伍該 伍該 伍該 救救救!
2007-12-07 3:46 am
回答 (6)
2007-12-07 3:56 am
9-2=7
2007-12-07 3:52 am
等於7呀!
2007-12-07 3:52 am
正負得負：
(+9)+(-2)
= 9-2
=7
∴ 答案是 7
(+9)+(-2)
= 9-2
=7
∴ 答案是 7
2007-12-07 3:52 am
(+9)+(-2)
=9-2
=7
..........
=9-2
=7
..........
收錄日期: 2021-04-13 14:39:32
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20071206000051KK03028