2 целых 11/18 + 1 целая 5/9 - (2целых 1/4 - 7/12) = ? пожалуйста, помогите
2 11/18 + 1 5/9 - (2 1/4 - 7/12) = 2 1/2 2 11/18 + 1 5/9 = 2 11/18 + 1 10/18 = = 3 21/18 = 4 3/18 = 4 1/6 2 1/4 - 7/12 = 2 3/12 - 7/12 = 1 15/12 - - 7/12 = 1 8/12 = 1 2/3 4 1/6 - 1 2/3 = 3 7/6 - 1 4/6 = 2 3/6 = = 2 1/2
2 целых 11/18 + 1 целая 10/18 - (2 целых 4/12 - 7/12) = 3 целых 21/18 - 1 целая 9/12 = 4 целых 3/18 -1 целая 9/12 = 4 целых 6/36 - 1 целая 27/36 = 3 целых 42/36 - 1 целая 27/36 = 2 целых 15/36