#### Answer

$-2\frac{5}{28}$

#### Work Step by Step

We have $\frac{-1-2}{2(-3)+10} - \frac{2(-5)}{-1(8)+1}$
Solving $$\frac{-3}{-6+10} - \frac{-10}{-8+1}$$ $$\frac{-3}{4} - \frac{-10}{-7}$$ $$\frac{-3}{4} - \frac{10}{7}$$ $$\frac{-21-40}{28}$$ $$\frac{-61}{28} = -2\frac{5}{28}$$