4/3+8/15+12/35-16/63+?
答案:4 悬赏:10 手机版
解决时间 2021-01-14 13:28
- 提问者网友：城市野鹿
- 2021-01-13 16:29
4/3+8/15+12/35-16/63+?
最佳答案
- 五星知识达人网友：英雄的欲望
- 2021-01-13 18:07
20/99
备注
（4*1）/(1*3)+(4*2)/(3*5)+(4*3)/(5*7)-(4*4)/(7*9)+(4*5)/(9*11)
备注
（4*1）/(1*3)+(4*2)/(3*5)+(4*3)/(5*7)-(4*4)/(7*9)+(4*5)/(9*11)
全部回答
- 1楼网友：山君与见山
- 2021-01-13 21:10
420/315+168/315+108/315-80/315
=616/315
=616/315
- 2楼网友：野慌
- 2021-01-13 20:07
4/3+8/15+12/35-16/63
=1+ 1/3 + 1/3 + 1/5 + 1/5+ 1/7 - 1/7 - 1/9
=1+ 2/3 + 2/5 - 1/9
=1+ 2/5+ 2/3 - 1/9
=7/5 + 5/9
=88/45
=1又43/45
=1+ 1/3 + 1/3 + 1/5 + 1/5+ 1/7 - 1/7 - 1/9
=1+ 2/3 + 2/5 - 1/9
=1+ 2/5+ 2/3 - 1/9
=7/5 + 5/9
=88/45
=1又43/45
- 3楼网友：低音帝王
- 2021-01-13 18:56
4/3+8/15+12/35-16/63
=4/1*3+8/3*5+12/5*7-16/7*9
=4/1*3+8/3*5+12/5*7-16/7*9
=1+1/3+1/3+1/5+1/5+1/7-1/7-1/9
=1+2/3+2/5-1/9
=1+30/45+18/45-5/45
=1+43/45
=45/45+43/45
=88/45
=4/1*3+8/3*5+12/5*7-16/7*9
=4/1*3+8/3*5+12/5*7-16/7*9
=1+1/3+1/3+1/5+1/5+1/7-1/7-1/9
=1+2/3+2/5-1/9
=1+30/45+18/45-5/45
=1+43/45
=45/45+43/45
=88/45
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