г) $$-8 \frac{5}{12} - (-7 \frac{13}{15})$$.

$$-8 \frac{5}{12} - (-7 \frac{13}{15}) = -8 \frac{5}{12} + 7 \frac{13}{15} = -\frac{101}{12} + \frac{118}{15} = \frac{-101 \cdot 5 + 118 \cdot 4}{60} = \frac{-505 + 472}{60} = \frac{-33}{60} = -\frac{11}{20} = -0,55$$