Автор - muhliddin

(2/7-3/4)*(2/13-1/2) =?

Ответ

Автор - Nastya171167
2/7  -  3/4 = 8/28 -  21/28 =  - 13/28
2/13  -  1/2 = 4/26  -  13/26 =  - 9/26
( - 13/28)  ×  ( - 9/26) =  9/56


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