## Thinking Mathematically (6th Edition)

$\dfrac{15}{14}$
Cancel the common factors to find: $\require{cancel} =(-\frac{5}{\cancel{4}2})(-\frac{\cancel{6}3}{7})$ Multiply the numerators together and the denominators together to find: $=\dfrac{-5(3)}{-2(7)} \\=\dfrac{15}{14}$