Ответ:
Пошаговое объяснение:
3.
1) 4 1/6 - 1 2/15 = 4 5/30 - 1 4/30 = 3 1/30
2) 4 5/9 - 4 5/9 = 0
3) 3 7/30 - 3 1/30 = 6/30 = 1/5
4) 1/5 + 0 = 1/5
ответ: 1/5
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4.
1) 5 - 1 7/36 = 3 29/36
2) 3 29/36 - 3 1/3 = 3 29/36 - 3 12/36 = 17/36
3) 2 7/12 + 6 8/9 = 2 21/36 + 6 32/36 = 8 53/36 = 9 17/36
4) 9 17/36 - 17/36 = 9
ответ: 9