7/13×5/11+5/13×4/11
答案:3 悬赏:10 手机版
解决时间 2021-02-22 17:40
- 提问者网友：鐵馬踏冰河
- 2021-02-21 19:03
7/13×5/11+5/13×4/11
最佳答案
- 五星知识达人网友：我住北渡口
- 2021-02-21 19:14
7/13×5/11+5/13×4/11
=(7×5)/(13×11)+(5×4)/(13×11)
=(35+20)/(13×11)
=55/(13×11)
=5/13
=(7×5)/(13×11)+(5×4)/(13×11)
=(35+20)/(13×11)
=55/(13×11)
=5/13
全部回答
- 1楼网友：逃夭
- 2021-02-21 20:49
55/143
- 2楼网友：底特律间谍
- 2021-02-21 20:21
7/13×5/11+5/13×4/11
=7/13×5/11+4/13×5/11
=(7/13+4/13)×5/11
=11/13×5/11
=5/13
=7/13×5/11+4/13×5/11
=(7/13+4/13)×5/11
=11/13×5/11
=5/13
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