\[\boxed{\mathbf{1119\ (1110)}\mathbf{.}\mathbf{\ }Еуроки\ - \ ДЗ\ без\ мороки}\]
\[1)\ \frac{1}{12} = \frac{1}{3} - \frac{1}{4}\]
\[2)\ \frac{2}{63} = \frac{1}{7} - \frac{1}{9}\]
\[3)\ \frac{1}{4} = \frac{1}{2} - \frac{1}{4}\]
\[4)\ \frac{3}{28} = \frac{1}{4} - \frac{1}{7}\]
\[5)\ \frac{1}{24} = \frac{1}{6} - \frac{1}{8}\]