Как зделать ? ? 9/17-27/68 2/3-5/16 9/10-4/15 4/15-11/60 5/8-1/3

Приводи к общему знаменателю
9/17 - 27/68 = 36/68 - 27/68 = 9/68
2/3 - 5/16 = 32/48 - 15/48 = 17/48
9/10 - 4/15 = 135/150 - 40/150 = 95/150 = 19/30
4/15 - 11 /60 = 16/60 - 11/60 = 5/60 = 1/12
5/8 - 1/3 = 15/24 - 8/24 = 7/24