Ответ:
а) 5/48 + 3/8 + 1/48 = (5+18+1)/48 = 24/48 = 1/2
б) (7/15 + 2/9) - 2/15 = (21/45 + 10/45 - 6/45) = 25/45 = 5/9
в) 14/27 - (5/27 + 1/6) = (14-5*3-1*9)/27 = -7/27
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Ответ:
а) 5/48 + 3/8 + 1/48 = (5+18+1)/48 = 24/48 = 1/2
б) (7/15 + 2/9) - 2/15 = (21/45 + 10/45 - 6/45) = 25/45 = 5/9
в) 14/27 - (5/27 + 1/6) = (14-5*3-1*9)/27 = -7/27