н) 10$$\frac{1}{2}$$ - 4$$\frac{9}{14}$$ = 10$$\frac{7}{14}$$ - 4$$\frac{9}{14}$$ = 9$$\frac{21}{14}$$ - 4$$\frac{9}{14}$$ = 5$$\frac{12}{14}$$ = 5$$\frac{6}{7}$$
Ответ: 5$$\frac{6}{7}$$