Ответ:
1) 3/11 = 3*65/715 = 195/715
2/13 = 2*55/715 = 110/715
4/5 = 4*143/715 = 572/715;
2) 5/16=5*63/1008=315/1008
6/7=6*144/1008=864/1008
2/9=2*112/1008=224/1008;
3) 13/15=1144/1320
5/8=825/1320
1/11=120/1320
4) 7/19=252/684
3/4=513/684
1/9=76/684
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Ответ:
1) 3/11 = 3*65/715 = 195/715
2/13 = 2*55/715 = 110/715
4/5 = 4*143/715 = 572/715;
2) 5/16=5*63/1008=315/1008
6/7=6*144/1008=864/1008
2/9=2*112/1008=224/1008;
3) 13/15=1144/1320
5/8=825/1320
1/11=120/1320
4) 7/19=252/684
3/4=513/684
1/9=76/684