Предмет: Алгебра, автор: lizunkil

решите пожалуйста!!!

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Ответы

Автор ответа: artemio434

а)
$- 2 \times ( - a + b + c) = 2a - 2b - 2c$
б)
$4 \times ( - m - n) = - 4m - 4n$
в)
$- 3 \times ( - 2a + 5b) = 6a - 15b$
г)
$0.5 \times (20c - 60d) = 10c - 30d$

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