Предмет: Математика, автор: isfandiersobirov09

Пж решите дкм много баллов

Приложения:

Ответы

Автор ответа: iltem2007

Ответ:

1)0.8a * 1,5 = 1,2a
2)2/3a * (-1 2/7b) * (-1 3/4) = 2/3a * (-9/7b) * (-7/4) = 2/3a * 9/7b * 7/4 = 2/3a * 9b * 1/4 = 2a * 3b * 1/4 = a * 3b * 1/2 = 3/2ab
3)-4.5 * (-1,2x) = 5,4x
4)-a * (-b) * (-c) = -abc
5)-2y * 3,54 = -7,08y
6)14/15x * 3/28y = 1/15x * 3/2y = 1/5x * 1/2y = 1/10xy

Пошаговое объяснение:

isfandiersobirov09: уже не надо

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