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Автор - Coko3

ХЕЕЕЕЛПП Я ОПАЗДЫВАЮ АААААААААААААА!!,!!!!;!;!;;!;

Ответ

Автор - ирэн79
1) 5/38•1 1/3=5/38•4/3=20/114=10/57
2)10/57-10/57=0
3)2 3/4:4 8/9=11/4:44/9=9/16
4)9/16•2 2/3=9/16•8/3=3/2=1 1/2
5)5/6+1 1/2=5/6+1 3/6=2 1/3
6)2 1/3-1 2/3=1 4/3-1 2/3=2/3
8)2/3+0=2/3
Ответ 2/3

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