\[ x + \frac{3 - 7}{11} = \frac{6}{11} \]
\[ x + \frac{-4}{11} = \frac{6}{11} \]
\[ x - \frac{4}{11} = \frac{6}{11} \]
\[ x = \frac{6}{11} + \frac{4}{11} \]
\[ x = \frac{6+4}{11} \]
\[ x = \frac{10}{11} \]
Ответ: \(x = \frac{10}{11}\).