2 Найдите значение выражения: a) 3/14 + (2/7 + 1/2) б) 11/56 + (6/7 - 3/8) в) (5/8 + 1/6) - 7/24 г) 15/36 - (1/3 - 1/12)

a) 3/14 + (2/7 + 1/2) = 3/14 + (4/14 + 7/14) = 3/14 + 11/14 = 14/14 = 1 б) 11/56 + (6/7 - 3/8) = 11/56 + (48/56 - 21/56) = 11/56 + 27/56 = 38/56 = 19/28 в) (5/8 + 1/6) - 7/24 = (15/24 + 4/24) - 7/24 = 19/24 - 7/24 = 12/24 = 1/2 г) 15/36 - (1/3 - 1/12) = 15/36 - (4/12 - 1/12) = 15/36 - 3/12 = 15/36 - 9/36 = 6/36 = 1/6 Ответ: a) 1, б) 19/28, в) 1/2, г) 1/6