1.化简下面个比 (1)21:105 (2)7.2:0.42 (3)5\6:4\9 (4)0.08:2 (5)19\3:76 (6)3.75:0.625
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![1.化简下面个比 (1)21:105 (2)7.2:0.42 (3)5\6:4\9 (4)0.08:2 (5)19\3:76 (6)3.75:0.625](/uploads/image/z/311422-22-2.jpg?t=1.%E5%8C%96%E7%AE%80%E4%B8%8B%E9%9D%A2%E4%B8%AA%E6%AF%94+%EF%BC%881%EF%BC%8921%3A105+%EF%BC%882%EF%BC%897.2%3A0.42+%EF%BC%883%EF%BC%895%5C6%3A4%5C9+%284%290.08%3A2+%285%2919%5C3%3A76+%286%293.75%3A0.625)
1.化简下面个比 (1)21:105 (2)7.2:0.42 (3)5\6:4\9 (4)0.08:2 (5)19\3:76 (6)3.75:0.625
1.化简下面个比 (1)21:105 (2)7.2:0.42 (3)5\6:4\9 (4)0.08:2 (5)19\3:76 (6)3.75:0.625
1.化简下面个比 (1)21:105 (2)7.2:0.42 (3)5\6:4\9 (4)0.08:2 (5)19\3:76 (6)3.75:0.625
(1)21:105 =1:
(2)7.2:0.42=120:7
(3)5\6:4\9=45:24=15:8
(4)0.08:2=1:25
(5)19\3:76 =1:12
(6)3.75:0.625 =15/4:5/8=120:20=6:1