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4除以5/3除以9/20
=4乘以3/5乘以20/9
=4/3乘以4
=16/3
2/9乘以0.125除以6/7
=2/9乘以1/8乘以7/6
=1/36乘以7/6
=7/216
不对请改正!
人气:367 ℃ 时间:2019-12-29 12:59:58
解答
4除以5/3除以9/20
=4乘以3/5乘以20/9
=4/3乘以4
=16/3

2/9乘以0.125除以6/7
=2/9乘以1/8乘以7/6
=1/36乘以7/6
=7/216
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