Помогите пожалуйста❤️

Ответ:

a)

b)

c)

d)

Пошаговое объяснение:

4_5/6 + 2_3/8 = 4 + (5/6) + 2 + (3/8) = 6 + (20/24) + (9/24) = 6 + (29/24) = 7 целых 5/24

7_5/18 - 1_7/12 = 7 + (5/18) - 1 - (7/12) = 6 + (10/36) - (21/36) = 6 - (11/36) = 5 + (36/36) - (11/36) = 5 целых 25/36

3_4/9+2_2/7 = 3 + (4/9) + 2 + (2/7) = 5 + (28/63) + (18/63) = 5 + (46/63) = 5 целых 46/63

5_3/14 - 1_1/21 = 5 + (3/14) - 1 - (1/21) = 4 + (9/42) - (2/42) = 4 + (7/42) = 4 + (1/6) = 4 целых 1/6