Ответы на вопрос:
1. 1) 4 - 7/12 = 3 12/12 - 7/12 = 3 5/12 2) 3 5/12 + 1 5/6 = 3 5/12 + 1 10/12 = 4 15/12 = 5 3/12 3) 5 3/12 + 2 1/3 = 5 3/12 + 2 4/12 = 7 7/12 4) 7 7/12 - 1 1/4 = 7 7/12 - 1 3/12 = 6 4/12 = 6 1/3 2. 1) 6 3/5 - 2 7/15 = 6 9/15 - 2 7/15 = 4 2/15 2) 4 2/15+ 8 3/4 = 4 8/60 + 8 45/60 = 12 53/60 3) 12 53/60 -1 1/60 = 11 52/60 = 11 13/15
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