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Автор - mastodontvv

-3(3b+1)-12=12 Решите пожалуйста СРОЧНО!

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Автор - KrisVlone

Вроде бы так,ответ ниже.

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Автор - Mashkachaku

Ответ:

-3(3b+1)-12=12

-9b-3-12=12

-9b-3=24

-9b=37

b=-3


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