Answer
$-1$
Work Step by Step
RECALL:
$\dfrac{a}{b} \div \dfrac{c}{d} = \dfrac{a}{b} \cdot \dfrac{d}{c}$
Use the rule above to obtain:
$\\=\dfrac{7}{8} \cdot \dfrac{-16}{14}$
Factor, and then cancel the common factors to obtain:
$\require{cancel}
\\=\dfrac{7}{8} \cdot \dfrac{-2 \cdot 8}{7 \cdot 2}
\\=\dfrac{\cancel{7}}{\cancel{8}} \cdot \dfrac{-\cancel{2} \cdot \cancel{8}}{\cancel{7} \cdot \cancel{2}}
\\=-1$
