\[ 5 - \frac{7}{3}z + \frac{40}{9}z = \frac{15}{2}z - \frac{77}{12}z + \frac{19}{3} \]
\[ \left( -\frac{7}{3} + \frac{40}{9} - \frac{15}{2} + \frac{77}{12} \right)z = \frac{19}{3} - 5 \]
\[ \left( -\frac{84}{36} + \frac{160}{36} - \frac{270}{36} + \frac{231}{36} \right)z = \frac{19}{3} - \frac{15}{3} \]
\[ \left( \frac{-84 + 160 - 270 + 231}{36} \right)z = \frac{4}{3} \]
\[ \frac{37}{36}z = \frac{4}{3} \]
\[ z = \frac{4}{3} \div \frac{37}{36} \]
\[ z = \frac{4}{3} \times \frac{36}{37} \]
\[ z = \frac{4 \times 12}{37} \]
\[ z = \frac{48}{37} \]
\[ z = 1\frac{11}{37} \]
Ответ: 48/37