Предмет: Математика, автор: sofiatronina04

помогите решить уравнение!​

Приложения:

ВикаБач: 4.2*(2x-1)=2.8*4.5; 8.4x -4.2 = 12.6; 8.4x=16.8; x=16.8/8.4=2;
sofiatronina04: пасяб

Ответы

Автор ответа: Kuprisel
0

Ответ: x=2

Пошаговое объяснение:

\frac{2x-1}{\frac{9}{2} }=\frac{\frac{14}{5} }{\frac{21}{5} }

\frac{(2x-1)*2}{9} = \frac{14}{21}

\frac{4x-2}{9}=\frac{2}{3}

3*(4x-2)=18

4x-2=6

4x=6+2

4x=8

x=8/4

x=2

Автор ответа: iramazurk
0

Ответ:

2

Пошаговое объяснение:

(2x - 1)/4,5 = 2,8/4 1/5

4 1/5 * (2х - 1) = 2,8 * 4,5

4,2 * (2х - 1) = 12,6

8,4х - 4,2 = 12,6

8,4х = 12,6 + 4,2

8,4х = 16,8

х = 16,8 : 8,4

х = 2

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