\[\boxed{\mathbf{996\ (996)}\mathbf{.}\mathbf{\ }Еуроки\ - \ ДЗ\ без\ мороки}\]
\[4 - \left( \frac{41}{84} - \frac{5^{\backslash 4}}{21} \right) + 7\frac{11}{30} = 4 - \left( \frac{41 - 20}{84} \right) + 7\frac{11}{30} = 4 - \frac{21}{84} + 7\frac{11}{30} =\]
\[= 3\frac{3^{\backslash 15}}{4} + 7\frac{11^{\backslash 2}}{30} = 10 + \left( \frac{3 \cdot 15 + 11 \cdot 2}{60} \right) = 10\frac{67}{60} = 11\frac{7}{60}.\]