3、计算。 3/4÷7/8÷15/14 (4/9+2/15)÷2/15 3/20÷ 0.2×2/3
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解决时间 2021-11-12 16:22
- 提问者网友:富士山上尢
- 2021-11-11 23:49
3、计算。 3/4÷7/8÷15/14 (4/9+2/15)÷2/15 3/20÷ 0.2×2/3
最佳答案
- 五星知识达人网友:拾荒鲤
- 2021-11-12 00:17
3/4÷7/8÷15/14
=3/4*8/7*14/15
=4/5
(4/9+2/15)÷2/15
=4/9*15/2+1
=10/3+1
=4又1/3
3/20÷ 0.2×2/3
=3/20*5*2/3
=1/2
=3/4*8/7*14/15
=4/5
(4/9+2/15)÷2/15
=4/9*15/2+1
=10/3+1
=4又1/3
3/20÷ 0.2×2/3
=3/20*5*2/3
=1/2
全部回答
- 1楼网友:骨子里都是戏
- 2021-11-12 01:57
1. 3/4÷7/8÷15/14
=3/4×8/7×14/15
=4/5
2.(4/9+2/15)÷2/15
=4/9×15/2+2/15×15/2
=10/3+1
=13/3
3.3/20÷ 0.2×2/3
=3/20÷1/5×2/3
=3/20×5×2/3
=1/2
=3/4×8/7×14/15
=4/5
2.(4/9+2/15)÷2/15
=4/9×15/2+2/15×15/2
=10/3+1
=13/3
3.3/20÷ 0.2×2/3
=3/20÷1/5×2/3
=3/20×5×2/3
=1/2
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