\[= - \frac{15}{4} - \left( - \frac{74}{9} + 7 \right) \cdot \frac{9}{4} =\]
\[= - \frac{15}{4} + \frac{74 \cdot 9}{9 \cdot 4} - \frac{7 \cdot 9}{4} =\]
\[= - \frac{15}{4} + \frac{74}{4} - \frac{63}{4} =\]
\[= \frac{- 15 + 74 - 63}{4} = - \frac{4}{4} = - 1\]