1) 2 5/9 + 7/9= 2 12/9= 3 3/9
2) 6 5/9 - 3 3/9= 3 2/9
Ответ: 3 2/9
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1) 2 5/9 + 7/9= 2 12/9= 3 3/9
2) 6 5/9 - 3 3/9= 3 2/9
Ответ: 3 2/9