1) 5/8-2/3=15/24-16/24=-1/24
2)2 1/3 : 1/24=7/3*24=56
3)2*1 3/7= 2 6/7
4)56-2 6/7=53 1/7
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1) 5/8-2/3=15/24-16/24=-1/24
2)2 1/3 : 1/24=7/3*24=56
3)2*1 3/7= 2 6/7
4)56-2 6/7=53 1/7
2 1/3 = 7/3
7/3 : (- 49/24) = - 7/3 х 24/49 = - 8/7
2 х 1 3/7 = 2 х 10/7 = 20/7
- 8/7 - 20/7 = - 28/7 = - 4
ответ: - 4