fanta2310

Verified answer

809
1) 1/2 и 1/3 = 3/6 и 2/6
2) 2/5 и 3/4 = 8/20 и 15/20
3) 1/2 и 3/7 = 7/14 и 6/14
4) 3/5 и 2/3 = 9/15 и 10/15
5) 3/2 и 7/5 = 15/10 и 14/10
6) 5/4 и 4/3 = 15/12 и 16/12
7) 2/7 и 8/11 = 22/77 и 56/77
8) 1/4 и 9/25 = 25/100 и 36/100 
9) 3/10 и 1/3 = 9/30 и 10/30

810
1/4 и 1/6 = 6/24 и 4/24     НОК = 12 (4*3 и 6*2)
1/10 и 1/4 = 4/40 и 10/4   НОК = 20 (10*2 и 4*5)
1/6 и 1/8 = 8/48 и 6/48     НОК = 24 (6*4 и 8*3)
1/6 и 1/9 = 9/54 и 6/54     НОК = 18 (6*3 и 9*2)
2/15 и 3/10 = 20/150 и 45/150  НОК = 30 (15*2 и 10*3)
5/12 и 3/8 = 40/96 и 36/96 НОК =24 (12*2 и 8*3)