## Prealgebra (7th Edition)

$7\frac{47}{72}$
Convert to fractions with the least common denominator and subtract. $17\frac{5}{24}-9\frac{5}{9}=17\frac{5\times3}{24\times3}-9\frac{5\times8}{9\times8}=17\frac{15}{72}-9\frac{40}{72}=16\frac{87}{72}-9\frac{40}{72}=7\frac{47}{72}$