Предмет: Математика, автор: vanechka2021

Помогите пожалуйста

Приложения:

Ответы

Автор ответа: likangerudneva
1

Ответ:

Пошаговое объяснение: 3) a = (0,6*17)/1,2 = 8,5

4) x = 8,5/(-3,4)=2,5

5)Первое действие: -9,7+7,1=-2,6

Второе действие: -2,6:(13/9)=(-26/10)*(9/13)=(-26*9)/(9*13)=-2

Третье действие: -2 + 3 2/3 = 1 2/3(дробь; Одна целая две трети)

Автор ответа: bibishakodirova1783
0

Ответ:

а÷0.06=17÷1.2

а=0.06*17÷1.2

а=0.85

2)-3,4*х=8.5

х=8,5÷(-3.4)

х=-2.5

3)(-9.7+7.1)÷(1 4/9)+3 2/3=5.46

Первое действие: -9,7+7,1=-2,6

Второе действие: -2,6:(13/9)=(-26/10)*(9/13)=(-26*9)/(9*13)=-2

Третье действие: -2 + 3 2/3 = 1 2/3

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