Предмет: Математика, автор: ponomarevnikita312

а+(а-7b)-(15+a)
9a-a-8b+3b
(-3,25(-1,75)):(-0,6+0,8:(-7))
Даю 10 баллов

Ответы

Автор ответа: uluvsku
1

Ответ:

1) a-7b-15

2)8a-5b

3) -7,9625

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