Ответ:

\(2\frac{13}{48}+2\frac{5}{12}=\frac{109}{48}+\frac{116}{48}=\frac{75}{16}\).

\(\frac{75}{16}:\frac{15}{4}=\frac{5}{4}\), а \(9\frac{2}{3}:12=\frac{29}{36}\).

\(\frac{5}{4}-\frac{29}{36}=\frac{45-29}{36}=\frac{4}{9}\).

Ответ: \(\frac{4}{9}\).