Выполните вычитание 10 целых-1 целая 1/9; 2. 7 целых 5/18-1 целая 7/12

1) 10 - 1 1/9 = 10 - 1 - 1/9 = 9 - 1/9 = 8 + 1 - 1/9 = 8 + 9/9 - 1/9 = 8 + (9 - 1) / 9 = 8 + 8/9 = 8 8/9;

2) 7 5/18 - 1 7/12 = 7 - 1 + 5/18 - 7/12 = 6 + (5 * 2) / (18 * 2) - (7 * 3) / (12 * 3) = 6 + 10/36 - 21/36 = 6 + (10 - 21) / 36 = 6 - 11/36 = 5 + 1 - 11/36 = 5 + 36/36 - 11/36 = 5 + (36 - 11) / 36 = 5 + 25/36 = 5 25/36.

Решим подобный пример:

5 1/24 - 2 5/36 = 5 - 2 + 1/24 - 5/36 = 3 + (1 * 3) / (24 * 3) - (5 * 2) / (36 * 2) = 3 + 3/72 - 10/72 = 3 + (3 - 10) / 72 = 3 - 7/72 = 2 + 1 - 7/72 = 2 + 72/72 - 7/72 = 2 65/72.