Answer
$-\dfrac{13}{16}$
Work Step by Step
Use the rule $\dfrac{a}{b} \div \dfrac{c}{d} =\dfrac{a}{b} \cdot \dfrac{d}{c}$ to obtain:
$=-\dfrac{13}{20} \cdot \dfrac{5}{4}$
Cancel common factors to obtain:
$\require{cancel}
\\=-\dfrac{13}{\cancel{20}4} \cdot \dfrac{\cancel{5}}{4}$
Multiply the numerators together and the denominators together to obtain:
$=-\dfrac{13(1)}{4(4)}
\\=-\dfrac{13}{16}$
