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Автор - marikkalashnikov1234

Срочно по алгебре!
Дана функция y=−4−a. При каких значениях a значение функции равно −9?

a=

Ответ

Автор - polyasha29

Ответ:

y=4-a

При y= -9

-9=4-a

-9-4= -a

-13= - a

a=13

Значение функции равно - 9 при а =13

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