Григорий8 месяцев назад
Вычислим 19/36 - 5/8 : (5 - 2 3/16) + 1/12 = 7/18.
1) 5 - 2 3/16 = 4 16/16 - 2 3/16 = 2 13/16.
2) 5/8 : 2 13/16 = 5/8 : 45/16 = 5/8 * 16/45 = (5 * 16)/(8 * 45) = 2/9;
3) 19/36 - 2/9 = 19/36 - 8/36 = 11/36;
4) 11/36 + 1/12 = 11/36 + 3/36 = 14/36 = 7/18.