найдите сумму или разность 5/24+3/8 7/10-2/5 7/9-5/7 2/3+7/8

5/24+3/8 = 5/24 + 9/24 = 14/24 = 7/12

7/10-2/5 = 7/10 - 4/10 = 3/10

7/9-5/7 = 49/63 - 45/63 = 4/63

 2/3+7/8 = 16/24 + 21/24 = 37/24 = 1 13/24