Предмет: Математика, автор: zlatazlata489

розв'яжіть рівняння 2,8/0,3х-2=2/5​

Приложения:

Ответы

Автор ответа: Nikolai10022000
4

Ответ:0,3х - 2 = 2,8*5 / 2

0,3х - 2 = 14/2

0,3х - 2 = 7

0,3х = 7 + 2

0,3х = 9

х = 9 : 0,3

х = 30

Пошаговое объяснение:

zlatazlata489: благодарю!
Автор ответа: iramazurk
1

Ответ:

30

Пошаговое объяснение:

2,8/(0,3х - 2) = 2/5

2 * (0,3х - 2) = 5 * 2,8

0,6х - 4 = 14

0,6х = 14 + 4

0,6х = 18

х = 18 : 0,6

х = 30

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