15b-3(2b+5)+(-5b+7) если b=-0,8Найти значение выражения. - Znanija.Site №31935015

15b-3(2b+5)+(-5b+7) если b=-0,8
Найти значение выражения.
- Предмет:
  Математика
- Автор:
  nguyen
- 5 лет назад

Ответы 1

Ответ:-4.8
Пошаговое объяснение:
15b-3(2b+5)+(-5b+7) =
15b-6b-15-5b+7=
4b-8=
b=0.8
4*0.8-8=3.2-8 = -4.8
- Автор:
  kathryn57
- 5 лет назад
- 0
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