\[ \frac{3}{5} \cdot \frac{7}{9}x - \frac{3}{5} \cdot \frac{1}{3} = x - \frac{7}{3} \]
\[ \frac{21}{45}x - \frac{3}{15} = x - \frac{7}{3} \]
\[ \frac{7}{15}x - \frac{1}{5} = x - \frac{7}{3} \]
\[ -\frac{1}{5} + \frac{7}{3} = x - \frac{7}{15}x \]
\[ \frac{-3 + 35}{15} = \frac{15x - 7x}{15} \]
\[ \frac{32}{15} = \frac{8x}{15} \]
\[ 32 = 8x \]
\[ x = \frac{32}{8} \]
\[ x = 4 \]
Ответ: 4