Помогите пожалуйста!Даю больше 10-ти баллов!Пример 1 и 3(Желанно с решением)Заранее,

1.
(45 1/2 - 2 3/8) - (5 5/6 + 6 3/4) + (10 2/3 - 5 5/8) = 35 7/12,

1) 45 1/2 - 2 3/8 = (45 - 2) + (1/2 - 3/8) = 43 + (4/8 - 3/8) = 43 + 1/8 = 43 1/8,
2) 5 5/6 + 6 3/4 = (5 + 6) + (5/6 + 3/4) = 11 + (10/12 + 9/12) =
    = 11 + 19/12 = 11 + 1 7/12 = 12 7/12,
3) 10 2/3 - 5 5/8 = (10 - 5) + (2/3 - 5/8) = 5 + (16/24 - 15/24) =
    = 5 + 1/24 = 5 1/24,
4) 43 1/8 - 12 7/12 + 5 1/24 = (43 - 12 + 5) + (1/8 - 7/12 + 1/24) =
    = 36 + (3/24 - 14/24 + 1/24) = 36 - 10/24 = 35 12/12 - 5/12 = 35 7/12,

3.
(12 1/2 - 3 5/6) - (2 8/9 + 1 4/5) - (5 5/8 - 4 3/4) - (6 9/40 - 5 11/90) = 4,

1) 12 1/2 - 3 5/6 = (12 - 3) + (1/2 - 5/6) = 9 + (3/6 - 5/6) = 9 - 2/6 =
    = 8 3/3 - 1/3 = 8 2/3,
2) 2 8/9 + 1 4/5 = (2 + 1) + (8/9 + 4/5) = 3 + (40/45 + 36/45) =
    = 3 + 76/45 = 3 + 1 31/45 = 4 31/45,
3) 5 5/8 - 4 3/4 = (5 - 4) + (5/8 - 3/4) = 1 + (5/8 - 6/8) = 1 - 1/8 = 7/8,
4) 6 9/40 - 5 11/90 = (6 - 5) + (9/40 - 11/90) = 1 + (81/360 - 44/360) =
    = 1 + 37/360 = 1 37/360,
5) 8 2/3 - 4 31/45 - 7/8 - 1 37/360 = (8 - 4 - 1) + (2/3 - 31/45 - 7/8 - 37/360) =
    = 3 + (240/360 - 248/360 - 315/360 - 37/360) = 3 + 360/360 = 3 + 1 = 4