а) 0,875 = 875/1000 = 7/8
7/8 + 8/7 = (77 + 88) / (8*7) = 49 + 64 / 56 = 113/56 = 2 + 1/56
Ответ: 2 1/56
б) 13/14 - 0,75 = 13/14 - 750/1000 = 13/14 - 75/100 = 13/14 - 3/4 = (134 - 314) / 14*4 = (52 - 42) / 56 = 10/56 = 5/28
Ответ: 5/28
а) 0,875 = 875/1000 = 7/8
7/8 + 8/7 = (77 + 88) / (8*7) = 49 + 64 / 56 = 113/56 = 2 + 1/56
Ответ: 2 1/56
б) 13/14 - 0,75 = 13/14 - 750/1000 = 13/14 - 75/100 = 13/14 - 3/4 = (134 - 314) / 14*4 = (52 - 42) / 56 = 10/56 = 5/28
Ответ: 5/28