Автор - irina19851119

2 целых а/60-3 целых в/70; 8 целых 3/16х-2 целых 17/56у

Ответ

Автор - angelina2k19

2 а/60 - 3 b/70 =

2 7а/420 - 3 6b/420 =

-1 7а - 6b/420

Ответы и объяснения

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