Question

2/7 * x = 2 1/7 + 1/7​

Answer 1

Решение и ответ:

$\displaystyle \frac{2}{7}\cdot x=2\frac{1}{7}+\frac{1}{7}$

$\displaystyle \frac{2}{7}\cdot x=2\frac{{1+1}}{7}$

$\displaystyle \frac{2}{7}\cdot x=2\frac{2}{7}$

$\displaystyle x=2\frac{2}{7}\div\frac{2}{7}$

$\displaystyle x=2\frac{2}{7}\cdot\frac{7}{2}$

$\displaystyle x=\frac{{16}}{7}\cdot\frac{7}{2}=\frac{{16}}{2}$

$\displaystyle \boxed{x=8}$

Answer 2

Ответ:

8

Пошаговое объяснение:

2/7 * х = 2 1/7 + 1/7

2/7х = 2 2/7

2/7х = 16/7

х = 16/7 : 2/7

х = 16/7 * 7/2

х = 8/1 * 1/1

х = 8/1

х = 8