Вычислите а)3/14+8/21 б) 5/6-3/22,в) 0,75-(3/16+1/24)

А) 3/14 + 8/21 = 9/42 + 16/42 = 25/42
б) 5/6 - 3/22 = 55/66 - 9/66 = 46/66 = 23/33
в) 0,75 - (3/16 + 1/24) = 0,75 - (9/48 - 2/48) = 0,75 - 7/48 = 75/100 - 7/48 = 3/4 - 7/48 = 36/48 - 7/48 = 29/48