Выполните действия 3/5-1/7= 5/3-4/9= 24/25-7/15=

Question

Выполните действия 3/5-1/7= 5/3-4/9= 24/25-7/15=

Answer 1

А. 3/5 - 1/7 = 21/35 - 5/35 = 16/35
б. 5/3 - 4/9 = 15/9 - 4/9 = 11/9 = 1(2/9)
в.24/25 - 7/15 = 72/75 - 35/75 = 37/75