Verified answer

Пошаговое объяснение:

4 7/12 - 2 9/12 = 3 19/12 - 2 9/12 = 1 10/12 = 1 5/6

4 7/12 - 2 9/12

= 4 - 2 + 7/12 - 9/12

= 2 + 7/12 - 9/12

= 2 - 2/12

= 2 - 1/6

= 1 5/6