Ответы на вопрос:
5)
5 3/18 + 18 1/27 = 93/18 + 487/27 = 279/54 + 2/54 = 281/54 = 5 11/54
8)
38 21/26 + 14 34/39 = 1009/26 + 580/39 = 3027/78 + 1160/78 = 4187/78 =
= 53 53/78
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