Ответ(ы) на вопрос:
Гость1/3 - 1/6 = 2/6 - 1/6 = 1/6
3/20 + 3/4 = 3/20 + 15/20 = 18/20 = 9/10
7/9 - 2/3 = 7/9 - 6/9 = 1/9
1/4 + 1/5 = 5/20 + 4/20 = 9/20
2/5 + 4/15 = 6/15 + 4/15 = 10/15 = 2/3
1/3 + 1/4 = 4/12 + 3/12 = 7/12
2/3 - 2/5 = 10/15 - 6/15 = 4/15
1/5 - 1/6 = 6/30 - 5/30 = 1/30
1/2 + 1/4 = 2/4 + 1/4 = 3/4
7/6 - 1 = 1 1/6 - 1 = 1/6
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