\[\boxed{\mathbf{2.}\mathbf{175}\mathbf{.\ ОК\ ГДЗ - домашка\ на\ }5}\]
Пояснение.
Решение.
\[\textbf{а)}\ \left( \frac{9}{16} + \frac{5}{6} \right) - \frac{1}{16} =\]
\[= \left( \frac{9}{16} - \frac{1}{16} \right) + \frac{5}{6} = \frac{8}{16} + \frac{5}{6} =\]
\[= \frac{1^{\backslash 3}}{2} + \frac{5}{6} =\]
\[= \frac{3}{6} + \frac{5}{6} = \frac{8}{6} = \frac{4}{3} = 1\frac{1}{3}\]
\[\textbf{б)}\ \left( \frac{5}{18} + \frac{11}{27} \right) - \frac{2}{27} =\]
\[= \frac{5}{18} + \left( \frac{11}{27} - \frac{2}{27} \right) =\]
\[= \frac{5}{18} + \frac{9}{27} = \frac{5}{18} + \frac{1^{\backslash 6}}{3} =\]
\[= \frac{5}{18} + \frac{6}{18} = \frac{11}{18}\]