Выполните деление 2/13 + 6/7 4/9 - 1/24 5/6 - (1/10 + 1/20)

1) 2/13 + 6/7 = 7 * 2 / (13 * 7) + 13 * 6 / (7 * 13) = 14/91 + 78/91 = (14 + 78) / 91 = 92/91;

Ответ: 92/91.

2) 4/9 - 1/24 = 8 * 4 / (9 * 8) - 3 / (24 * 3) = 32/72 - 3/72 = (32 - 3) / 72 = 29/72;

Ответ: 29/72.

3) 5/6 - (1/10 + 1/20) = 5/6 - (2/20 + 1/20) = 5/6 - (2 + 1) / 20 = 5/6 - 3/20 = 50/60 - 9/60 = (50 - 9) / 60 = 41/60;

Ответ: 41/60.