Ответ:
Пошаговое объяснение:
1)в
1) 5 3/40 - 4 8/15 = 5 9/120 - 4 64/120 = 4 129/120 - 4 64/120 = 65/120 = 13/24
2) 6 7/12 + 13/24 = 6 14/24 + 13/24 = 6 27/24 = 7 3/24 = 7 1/8
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4)
5 5/33 + y = 8 3/44
y = 8 3/44 - 5 5/33
y = 8 9/132 - 5 20/132
y = 7 141/132 - 5 20/132
y = 2 121/132
y = 2 11/12