Thjeshtoni shprehjet me thyesa algjebrike.

1. $\dfrac{1}{a} + \dfrac{2}{a}$
2. $\dfrac{2b}{5} - \dfrac{3b}{8}$
3. $\dfrac{5}{6c} + \dfrac{2}{3c}$
4. $\dfrac{3}{4d} - \dfrac{1}{2d^2}$
5. $\dfrac{3}{d} + \dfrac{5}{f}$
6. $\dfrac{3a}{b} \times \dfrac{5b}{3a^2}$
7. $\dfrac{3a^2}{b} : \dfrac{9a}{b^2}$
8. $\dfrac{a}{a+1} - \dfrac{a}{a+2}$