## Thinking Mathematically (6th Edition)

$6$
Convert each mixed number to an improper fraction: $=(\frac{4(3)+3}{4})(\frac{5(1)+3}{5}) \\=(\frac{15}{4})(\frac{8}{5})$ Cancel the common factors: $\require{cancel} =(\frac{\cancel{15}3}{\cancel{4}})(\frac{\cancel{8}2}{\cancel{5}})$ Multiply the numerators together and the denominators together: $=\dfrac{3(2)}{1(1)} \\=\dfrac{6}{1} \\=6$