2/3:3/4:4/5化简比
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2/3:3/4
=2/3*4/3
=8/9
=8:9
=40:45
3/4:4/5
=3/4*5/4
=15/16
=15:16
=45:48
2/3:3/4:4/5=40:45:48
=2/3*4/3
=8/9
=8:9
=40:45
3/4:4/5
=3/4*5/4
=15/16
=15:16
=45:48
2/3:3/4:4/5=40:45:48
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