Предмет: Математика, автор: savica505

Виконайте по діях:
-3,2 ÷ (-0,8) + (-1,4) ÷ 1/2 ÷ (1 - 3/10 ÷ (-1,8))
Тільки не з фотомача!!!

Ответы

Автор ответа: iramazurk
2

Ответ:

1,6

Пошаговое объяснение:

1) 3/10 : (-1,8) = 3/10 : (-18/10) = 3/10 * (-10/18) = 1/1 * (-1/6) = -1/6

2) 1 - (-1/6) = 1 + 1/6 = 1 1/6

3) -3,2 : (-0,8) = 4

4) -1,4 : 1/2 = -14/10 * 2/1 = -28/10 = -14/5

5) -14/5 : 1 1/6 = -14/5 : 7/6 = -14/5 * 6/7 = -2/5 * 6/1 = -12/5 = -2,4

6) 4 + (-2,4) = 4 - 2,4 = 1,6

Автор ответа: dyexfnf
3

Ответ:

Пошаговое объяснение:

-3,2 : (-0,8) + (-1,4) : 1/2 : (1 - 3/10 : (-1,8)) = 1,6

1) -3,2 : (-0,8) = 4

2) -1,4 : 1/2 = - 1,4 :  0,5 = - 2,8

3) 3/10 : (-1,8) = 3/10 : (-1 8/10) = 3/10 : (-18/10) = 3/10 * (-10/18) = - 3/18 = - 1/6

4) 1 - (-1/6) = 1 + 1/6 = 1 1/6

5) -2,8 : 1 1/6 = -28/10 : 7/6 = -28/10 * 6/7 = -4/5 * 3 = -12/5 = -2,4

6) 4 + (-2,4) = 4 - 2,4 = 1,6

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