1又1/3-7/12+9/20-11/30+13/42-15/56的简便计算
答案:4 悬赏:40 手机版
解决时间 2021-12-02 00:02
- 提问者网友：活着好累
- 2021-12-01 05:59
1又1/3-7/12+9/20-11/30+13/42-15/56的简便计算
最佳答案
- 五星知识达人网友：何以畏孤独
- 2021-12-01 07:23
1又1/3-7/12+9/20-11/30+13/42-15/56
=1+1/3-1/3-1/4+1/4+1/5-1/5-1/6+1/6+1/7-1/7-1/8
=1-1/8
=7/8
=1+1/3-1/3-1/4+1/4+1/5-1/5-1/6+1/6+1/7-1/7-1/8
=1-1/8
=7/8
全部回答
- 1楼网友：廢物販賣機
- 2021-12-01 10:20
7/8，1又1/3-7/12+9/20-11/30+13/42-15/56
=1+1/3-1/3-1/4+1/4+1/5-1/5-1/6+1/6+1/7-1/7-1/8
=1-1/8
=7/8
=1+1/3-1/3-1/4+1/4+1/5-1/5-1/6+1/6+1/7-1/7-1/8
=1-1/8
=7/8
- 2楼网友：何以畏孤独
- 2021-12-01 09:01
1+1/3-(1/3+1/4)+(1/4+1/5)-(1/5+1/6)+(1/6+1/7)-(1/7+1/8)=7/8
- 3楼网友：洎扰庸人
- 2021-12-01 07:56
1又1/3-7/12+9/20-11/30+13/42-15/56
=1+1/3-1/3-1/4+1/4+1/5-1/5-1/6+1/6+1/7-1/7-1/8
=1-1/8
=7/8
或者1+1/3-(1/3+1/4)+(1/4+1/5)-(1/5+1/6)+(1/6+1/7)-(1/7+1/8)=7/8
可以这样哦！
=1+1/3-1/3-1/4+1/4+1/5-1/5-1/6+1/6+1/7-1/7-1/8
=1-1/8
=7/8
或者1+1/3-(1/3+1/4)+(1/4+1/5)-(1/5+1/6)+(1/6+1/7)-(1/7+1/8)=7/8
可以这样哦！
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