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1) 1 2/5 : 7/10
2) 5/9 : 1 2/9
3) 1 3/4 : 2 5/8
4) 1 : 10/3
1) 1 2/5 : 7/10
2) 5/9 : 1 2/9
3) 1 3/4 : 2 5/8
4) 1 : 10/3
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Ответ:
1) 1 2/5 : 7/10= 7/5: 7/10= 5/7 * 7/10= 1/2= 0,5
2) 5/9 : 1 2/9= 5/9 : 11/9= 9/5 * 11/9= 2 1/5= 2,2
3) 1 3/4 : 2 5/8= 7/4 : 21/8= 4/7 * 21/8= 1 1/2= 1,5
4) 1 : 10/3= 3/3 * 10/3= 10/3= 3 1/3