1) 7целых 1\2 ,4 целых 2\3 , 5 целых 1\6,3 целых

1) 7 1/2 = (7 * 2 + 1)/2 = 15/2 = 135/18.
    4 2/3 = (4 * 3 + 2)/3 = 14/3 = 84/18.
    5 1/6 = (5 * 6 + 1)/6 = 31/6 = 93/18.
    3 4/9 = (3 * 9 + 4)/9 = 31/9 = 62/18.

2) 9 1/2 = (9 * 2 + 1)/2 = 19/2 = 114/12.
    5 1/3 = (5 * 3 + 1)/3 = 16/3 = 64/12.
    6 3/4 = (6 * 4 + 3)/4 = 27/4 = 81/12.
    8 5/6 = (8 * 6 + 5)/6 = 53/6 = 106/12.

3) 12 2/3 = (12 * 3 + 2)/3 = 38/3 = 570/45.
    7 3/5 = (7 * 5 + 3)/5 = 38/5 = 342/45.
    6 4/9 = (6 * 9 + 4)/9 = 58/9 = 290/45
    4 2/15 = (4 * 15 + 2)/15 = 62/15 = 186/45.