Предмет: Математика, автор: askhatulyn

2a -[(a-5a)+2a+b-(3а -

- 2a+b)]

помогите
​

Ответы

Автор ответа: tinadobao
1
Ответ 5а
Решение на фотографии
tinadobao: 2а-((-4а)+2а+b-(a+b))= 2a-(-3a)= 2a+3a=5a
askhatulyn: спасибо
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