Предмет: Математика, автор: askhab9596

Срочно! расскройте скобки и преведидите подобные слагаемые выражении:
-(1,3а+3,9)+(1,5b-2,4a)-(0,8b--4,2a)​

tatsach: В последней скобке перед 4,2 один или два минуса?
askhab9596: Нет, один, случайно

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Автор ответа: tatsach
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Ответ:

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