Дроби к общему знаменателю 1/2 и 1/4 2/3 и 5/9 1/3 и 1/6 7/8 и 15/16 кто добрый на это свете

1/2 и 1/4 = (2+1)/4 = 3/4
2/3 и 5/9 = (6+5)/9 = 11/9 = 1 2/9
1/3 и 1/6  = (2+1)/6 = 3/6 = 1/3
7/8 и 15/16= (14+15)/16 = 29/16 = =1 13/16

1) 2/4 и 1/4

2) 5/9 и 6/9

3) 2/6 и 1/6

4)14/16 и 15/16