化简比 14：35= 1/4:2/3 2/5:1.8= 102/34=
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14：35=2:5
1/4:2/3=3:8
2/5:1.8=2:9
102/34=3
======以下答案可供参考======
供参考答案1:
14：35= 2∶5
1/4:2/3 =3∶8
2/5:1.8=2∶9
102/34=3
供参考答案2:
14：35= 2*7：5*7
=2：51/4:2/3
=1/4*3/2
=3/8=3：82/5:1.8
=2/5：9/5
=2/5*5/9
=2/9=2：9 102/34
=2*51/2*17
=51/17
=17*3/17
=3=3：1