Предмет: Алгебра, автор: Romaska27

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8*(a+1)-7a=9

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Автор ответа: temagaiva
0

8a+8-7a=9 => 1a=1 => a=1

Автор ответа: stalker5
0

8*(a+1)-7a=9

8а+8-7а=9

8+а=9

а=9-8

а=1

8*(1+1)-7*1=9

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