8 Реши уравнения: (81 - x) : 5 = 12 - Znanija.Site

8 Реши уравнения: (81 - x) : 5 = 12
- Предмет:
  Математика
- Автор:
  charlie41
- 11 месяцев назад

Ответы 1

(81 - x) : 5 = 12 | ×5
5 (81 - x) : 5 = 12 5
81 - x = 60
-x = -21 | ×(-1)
x = 21
- Автор:
  skippy4bkz
- 11 месяцев назад
- 7
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