Ответ:
1)2 10/13 + 1 1/13 = 3 11/13;
2)15 8/13 - 7 2/13 = 8 6/13;
3)2 7/10 + 3 3/10 = 6;
4)1 - 13/17 = 17/17 - 13/17 = 4/17;
5)10 7/13 - 2 8/13 = 7 20/13 - 8/13 = 7 12/13;
6)4 11/12 + 5 3/12 = 10 1/12.
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Ответ:
1)2 10/13 + 1 1/13 = 3 11/13;
2)15 8/13 - 7 2/13 = 8 6/13;
3)2 7/10 + 3 3/10 = 6;
4)1 - 13/17 = 17/17 - 13/17 = 4/17;
5)10 7/13 - 2 8/13 = 7 20/13 - 8/13 = 7 12/13;
6)4 11/12 + 5 3/12 = 10 1/12.