Ответы на вопрос:
1) 3 5/9 - 2 2/15 = 3 25/45 - 2 6/45 = 1 19/45 2) -1 19/45 : 9,6 = - 64/45 : 48/5 = - 64/45 · 5/48 = -4/27 3) 0,6 · 5/6 = 3/5 · 5/6 = 1/2 4) -4/27 + 1/2 = -8/54 + 27/54 = 19/54
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