Вопрос:

Ответ:

\[\frac{2}{5}x + \frac{2}{3} = \frac{1}{3} - \frac{3}{25}x\]

\[\frac{2^{\backslash 5}}{5}x + \frac{3}{25}x = \frac{1}{3} - \frac{2}{3}\]

\[\frac{10 + 3}{25}x = - \frac{1}{3}\]

\[\frac{13}{25}x = - \frac{1}{3}\]

\[x = - \frac{1}{3}\ :\frac{13}{25} = - \frac{1}{3} \cdot \frac{25}{13}\]

\[x = - \frac{25}{39}.\]