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Решение и ответ:

[tex]\displaystyle \frac{2}{7}\cdot x=2\frac{1}{7}+\frac{1}{7}[/tex]

[tex]\displaystyle \frac{2}{7}\cdot x=2\frac{{1+1}}{7}[/tex]

[tex]\displaystyle \frac{2}{7}\cdot x=2\frac{2}{7}[/tex]

[tex]\displaystyle x=2\frac{2}{7}\div\frac{2}{7}[/tex]

[tex]\displaystyle x=2\frac{2}{7}\cdot\frac{7}{2}[/tex]

[tex]\displaystyle x=\frac{{16}}{7}\cdot\frac{7}{2}=\frac{{16}}{2}[/tex]

[tex]\displaystyle \boxed{x=8}[/tex]

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