Предмет: Алгебра, автор: yanasuper1256

РАСКРОЙТЕ СКОБКИ:
1) a+(b-(c-d))
2) a-(b-(c-d))
3) a-((b-c)-d)
4) a-(b+(c-(d-k)))

Ответы

Автор ответа: Аноним

1

Ответ:

1) a+(b-(c-d)) = a+(b-c+d) = a+b-c+d

2) a-(b-(c-d)) = a-(b-c+d) = a-b+c-d

3) a-((b-c)-d) = a-(b-c-d) = a-b+c+d

4) a-(b+(c-(d-k))) = a-(b+(c-d+k)) = a-(b+c-d+k) = a-b-c+d-k

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