1.Найдите значение выражения: а) 2 3/4 - 1 5/6; б) 4 2/5 +3 5/6; в) 7 5/12 – (1 5/8 + 2 1/24).
2.Решите уравнение: 9 16/51 – с = 4 11/34
а - 5 2/15 = 3 5/12
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