62. \(\frac{8}{15}\) - 12 \(\frac{17}{30}\)

1. Convert mixed number to improper fraction: $$12 \frac{17}{30} = \frac{377}{30}$$.
2. Rewrite expression: $$\frac{8}{15} - \frac{377}{30}$$.
3. Subtract fractions: $$\frac{16}{30} - \frac{377}{30} = -\frac{361}{30}$$.
4. Convert to mixed number: $$-\frac{361}{30} = -12 \frac{1}{30}$$.