Сложение и вычитание смешанных дробей. 288. 1) 2 3/10 +6 5/8; 2) 1 3/4 + 2 1/6; 3) 7 5/9 + 3 1/6; 4) 2 3/14+ 1 5/6

быстрее дам 20 баллов​
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