1/20-4/77+5/66-7/78+12/35
答案:2 悬赏:10 手机版
解决时间 2021-02-19 02:25
- 提问者网友：我的未来我做主
- 2021-02-18 01:45
1/20-4/77+5/66-7/78+12/35
最佳答案
- 五星知识达人网友：煞尾
- 2021-02-18 02:56
1/20-4/77+5/66-7/78+12/35
=(1/20+12/35)-(4/77-5/66)-7/78
=(7+48)/140-(24-35)/(7*6*11)-7/78
=11/28+1/42-7/78
=(33+2)/(7*2*2*3)-7/78
=5/12-7/78
=(5*13-7*2)/(6*13*2)
=17/52
=(1/20+12/35)-(4/77-5/66)-7/78
=(7+48)/140-(24-35)/(7*6*11)-7/78
=11/28+1/42-7/78
=(33+2)/(7*2*2*3)-7/78
=5/12-7/78
=(5*13-7*2)/(6*13*2)
=17/52
全部回答
- 1楼网友：神的生死簿
- 2021-02-18 04:23
1/20-4/77+5/66-7/78+12/35
=(1/20+12/35)-(4/77-5/66)-7/78
=(7+48)/140-(24-35)/(7*6*11)-7/78
=11/28+1/42-7/78
=(33+2)/(7*2*2*3)-7/78
=5/12-7/78
=(5*13-7*2)/(6*13*2)
=17/52
=(1/20+12/35)-(4/77-5/66)-7/78
=(7+48)/140-(24-35)/(7*6*11)-7/78
=11/28+1/42-7/78
=(33+2)/(7*2*2*3)-7/78
=5/12-7/78
=(5*13-7*2)/(6*13*2)
=17/52
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