\[\sqrt[3]{- 3\frac{3}{8}} + 12\sqrt[4]{7\frac{58}{81}} = \sqrt[3]{- \frac{27}{8}} + 12 \cdot \sqrt[4]{\frac{625}{81}} =\]
\[= - \frac{3}{2} + 12 \cdot \frac{5}{3} = - 1,5 + 20 = 18,5.\]