Question

а) 2 - 1/3 = 1 3/ 3- 1/3 = 1 2/3.
б) 3 6/7 - 2 8/9 = (3 - 2) + (6/7 - 8/9) = 1 54/63 - 56/63 = 1 2/63

Answer 1

1 решен правильно
во 2 ошибка 1 54/63-56/63=1-2/63=63/63-2/63=61/63