2·(4c-2)+2·3c+2·(2c+7)+c =
= 8c - 4 + 6c + 4c + 14 + c =
= 19c + 10
Ответ: 19с+10
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2·(4c-2)+2·3c+2·(2c+7)+c =
= 8c - 4 + 6c + 4c + 14 + c =
= 19c + 10
Ответ: 19с+10