найдите значение выражения 7,8а+(3,6а-2,1)*1,5-(2,5а+5,6) при а =2,5 - №20877568

найдите значение выражения 7,8а+(3,6а-2,1)*1,5-(2,5а+5,6) при а =2,5
- Предмет:
  Алгебра
- Автор:
  howiekramer
- 6 лет назад

Ответы 1

7,8а+(3,6а-2,1)*1,5-(2,5а+5,6) = 7,8а+5,4а-3,15-2,5а-5,6 = 10,7а-8,75а=2,510,7*2,5-8,75 = 26,75-8,75 = 18
- Автор:
  zaidrqtv
- 6 лет назад
- 0
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