Дроби к общему знаменателю и выполните сложение 5/6 - 2/3 17/18 - 5/6 5/8 - 5/24 1/2 - 3/10.

5/6 - 2/3 = 5/6 - 4/6 = 1/6
17/18 - 5/6 = 17/18 - 15/18 = 2/18 = 1/9
5/8 - 5/24 = 15/24 - 5/24 = 10/24 = 5/12
1/2 - 3/10 = 5/10 - 3/10 = 2/10 = 1/5

1)5/6-2/3 = 5/6-2/6=4/6=1/6
2)17/18-5/6=17/18-15/18=2/18=1/9
3)5/8-5/24=15/24-5/24=10/24=5/12
4)1/2-3/10=5/10-3/10=2/10=1/5