\[Страница\ 72.\]
\[\boxed{\mathbf{9.}}\]
\[x - \left( 12\frac{3}{4} + 1\frac{5}{8} \right) = 5\frac{1}{2}\]
\[x = 5\frac{1^{\backslash 4}}{2} + \left( 12\frac{3^{\backslash 2}}{4} + 1\frac{5}{8} \right)\]
\[x = 5\frac{4}{8} + 12\frac{6}{8} + 1\frac{5}{8}\]
\[x = 18\frac{15}{8} = 19\frac{7}{8}\]
\[Ответ:19\frac{7}{8}.\]
\[\boxed{\mathbf{10.}}\]
\[x + 10\frac{1}{2} = 27\frac{3}{4} - 11\frac{1}{4}\]
\[x + 10\frac{1}{2} = 16\frac{2}{4}\]
\[x = 16\frac{1}{2} - 10\frac{1}{2}\]
\[x = 6\]
\[Ответ:6.\]