Приведите дроби к общему знаменателю 5/16 и 7/12 2/21 и 3/14 7/15 и 5/18 11/30 и 5/42 2/3 и 1/5 5/8 и 7/9 7/15 и 9/30 7/24 и 5/18 3/26 и 5/39 11/12 и 13/18 23/24 и 5/36 27/50 и 31/20 3/4 и 7/12 2/5 и 3/7 11/20 и 8/15 3/8 и 1/6

15/48 и 28/48

8/84 и 18/84

42/90 и 25/90

77/210 и 25/210

10/15 и 3/15

2/21 и 2/14=4/42 и 6/42

7/15 и 5/18=42/90 и 25/90

11/30 и 5/42=77/210 и 25/210

2/3 и 1/5=10/15 и 3/15

5/8 и 7/9 = 45/72 и 56/72

7/15 и 9/30=14/30 и 9/30

7/24 и 5/18=21/72 и 20/72

3/26 и 5/39=9/78 и 10/78

11/12 и 13/18=33/36 и 26/36

23/24 и 5/36=69/72 и 10/72

27/50 и 31/20=54/100 и 155/100

3/4 и 7/12=9/12 и 7/12

2/5 и 3/7 = 14/35 и 15:35

11/20 и 8/15 = 33/60 и 32/60

3/8 и 1/6 = 9/24 и 4/24