Предмет: Математика, автор: Sweet1717

Как решить "1-2d-2c eсли d+c=4"?

Ответы

Автор ответа: keevie

0

$1-2d-2c=1-2(d+c)=1-2*4=-7$

Автор ответа: Sweet1717

0

А почему d-c заменилось на d+c?

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