5/3-7/3+5/2-7/4用简便方法
答案:3 悬赏:60 手机版
解决时间 2021-02-10 06:46
- 提问者网友:遮云壑
- 2021-02-09 12:07
5/3-7/3+5/2-7/4用简便方法
最佳答案
- 五星知识达人网友:我住北渡口
- 2021-02-09 12:49
3/5-3/7+2/5-4/7
=(3/5+2/5)-(3/7+4/7)
=1-1
=0
=(3/5+2/5)-(3/7+4/7)
=1-1
=0
全部回答
- 1楼网友:渡鹤影
- 2021-02-09 13:46
5/3-7/3+5/2-7/4
=(5/3-7/3)+(10/4-7/4)
=-2/3+3/4
=-8/12+9/12
=1/12
=(5/3-7/3)+(10/4-7/4)
=-2/3+3/4
=-8/12+9/12
=1/12
- 2楼网友:佘樂
- 2021-02-09 13:25
5/3-7/3+5/2-7/4
=(5/2-7/4)+(5/3-7/3)
=(10/4-7/4)-2/3
=3/4-2/3
=(9-8)/12
=1/12
=(5/2-7/4)+(5/3-7/3)
=(10/4-7/4)-2/3
=3/4-2/3
=(9-8)/12
=1/12
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