Ответ:
Пошаговое объяснение:
1)
1) 3 5/6 - 2 3/4 = 3 10/12 - 2 9/12 = 1 1/12
2) 1 1/12 : 7/12 = 13/12 * 12/7 = 13/7 = 1 6/7
3) 1 6/7 + 5 1/2 = 1 12/14 + 5 7/14 = 6 19/14 = 7 5/14
ответ: 7 5/14
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2)
1) 2 1/3 + 2 5/12 = 2 4/12 + 2 5/12 = 4 9/12 = 4 3/4
2) 2 2/3 * 4 3/4 = 8/3 * 19/4 = 38/3 = 12 2/3
3) 12 2/3 - 4 4/5 = 12 10/15 - 4 12/15 = 7 13/15
ответ: 7 13/15