Question

Which of the following rational numbers are positive:
(i) $\frac{-8}{7}$
(ii) $\frac{9}{8}$
(iii) $\frac{-19}{-13}$
(iv) $\frac{-21}{13}$

Answer 1

The numbers can be rewritten as:

$$\begin{gathered} \left(i\right)-\frac{8}{7} \\ \left(ii\right)\frac{9}{8} \\ \left(iii\right)\frac{19}{13} \\ \left(iv\right)-\frac{21}{13} \end{gathered}$$

Positive rational numbers are (ii) and (iii), i.e., $\frac{9}{8}\mathrm{and}\frac{-19}{-13}$.