Решите уравнение и сделайте проверку 1/x-1/7x=2/7

[latex] \frac{1}{x} - \frac{1}{7x} = \frac{2}{7} / *7x[/latex] 7 - 1 = 2x -2x = -6  x = 3  проверка:  [latex] \frac{1}{3} - \frac{1}{7*3} = \frac{2}{7} [/latex] [latex] \frac{1}{3} - \frac{1}{21} = \frac{2}{7} [/latex] [latex] \frac{7}{21} - \frac{1}{21} = \frac{2}{7} [/latex] [latex] \frac{6}{21} = \frac{2}{7} [/latex] [latex] \frac{6}{21} = \frac{6}{21} [/latex]