Предмет: Математика, автор: malushanya

1). 16,1-0,27x=6,65
2). 6,424+3,8x=7,2

Помогите

Ответы

Автор ответа: iramazurk
1

Ответ:

Пошаговое объяснение:

1.

0,27x = 16,1 - 6,65

0,27x = 9,45

x = 9,45 : 0,27

x = 35

2.

3,8x = 7,2 - 6,424

3,8x = 0,776

x = 0,776 : 3,8

x = 776/1000 : 3. 8/10

x = 97/125 : 38/10

x = 97/125 : 19/5

x = 97/125 * 5/19

x = 97/25 * 1/19

x = 97/475

Автор ответа: BaAzAiKA
1

Ответ:

1) Сначала перенесём числа в одну сторону, х в другую:

-0.27х=6,65-16,1 (Знаки при переносе меняются на противоположный)

-0,27х=-9,45

х=-9,45:(-0.27)

Минусы взаимноуничтожаютмы и получается

х=35

2) Снова перенесём числа в одну сторону, х в другую:

3,8х=7,2-6,424

3,8х=0,776

Дальше преобразовываем из десятичной дроби в обычную:

х=97/125 : 19/5

х= 97/475

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