Решите срочно !Пжлст

1) 18/27
2)21/7 - 4/7 = 17/7
3) 8/14 + 3/14 = 11/14
4) 17/18 - 15/ 18 = 2/18 = 1/9
5) 22/9 - 16/9 = 6/9 = 2/3
6) 4 4/12 = 4 1/3
7) 8/13 * 1/4 = 2/13
8) 14/5 = 2 4/5
9) 3/14 * 1/5 = 3/70
10) (3/12 - 1/12)*5 = 1/6 *5 = 5/6