9 1/5 - n = 7 3/5 b - 3/17 = 1 16/17
n = 9 1/5 - 7 3/5 b = 1 16/17 + 3/17
n = 8 6/5 - 7 3/5 b = 1 19/17
n = 1 3/5 b = 2 2/17
Проверка: 9 1/5 - 1 3/5 = 7 3/5 Проверка: 2 2/17 - 3 17 = 1 16/17
8 6/5 - 1 3/5 = 7 3/5 1 19/17 - 3/17 = 1 16/17
7 3/5 = 7 3/5 1 16/17 = 1 16/17