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Sudedame ir atimame

Trupmenų, kurių vardikliai vienodi, sudėtis ir atimtis

QuestionAnswer
2 3 - + - 6 6 5 - 6
9 2 - + - 11 11 1
7 8 - + - 20 20 3 - 4
17 12 - - - 13 13 5 - 13
22 15 - - - 30 30 7 - 30
34 17 - - - 23 23 17 - 23
13 3 10 - + - + - 49 49 49 26 - 49
34 12 28 - - - + - 57 57 57 50 - 57
87 13 28 - - - - - 23 23 23 2
16 24 - + - 56 56 5 - 7