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HasAnn

Ответ:

2 1/4+1 5/8= сначала переводим в неправильную дробь

=9/4+13/8=приводим к общему знаменателю (8)

=18/8+13/8=31/8=теперь вычисляем сколько целых (31:8=3 (7остаток)

=3  7/8

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