Предмет: Алгебра, автор: ангелина668

Вынести общий множитель за скобки: 2l(k+m)-k-m

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Автор ответа: Юленька194

0

21(k+m)-k-m=21(k+m)-(k+m)=(k+m)(21-1)=20(k+m)

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