ГДЗ по математике 6 класс Дорофеев Задание 948

\[\boxed{\mathbf{948\ (948)}\mathbf{.}\mathbf{\ }Еуроки\ - \ ДЗ\ без\ мороки}\]

\[\textbf{а)}\ \frac{1}{2} - \frac{1}{3} - \frac{1}{5} = \frac{15}{30} - \frac{10}{30} - \frac{6}{30} = \frac{15 - 10 - 6}{30} = - \frac{1}{30}\]

\[\textbf{б)}\ \frac{1}{4} - \frac{1}{5} - \frac{1}{10} = \frac{5}{20} - \frac{4}{20} - \frac{2}{20} = \frac{5 - 4 - 2}{20} = - \frac{1}{20}\]

\[\textbf{в)}\ \frac{1}{2} - 1\frac{1}{3} + \frac{1}{6} = \frac{3}{6} - \frac{8}{6} + \frac{1}{6} = \frac{3 - 8 + 1}{6} = - \frac{4}{6} = - \frac{2}{3}\]

\[\textbf{г)}\frac{1}{4} - 1\frac{1}{2} + \frac{1}{8} = \frac{2}{8} - \frac{12}{8} + \frac{1}{8} = \frac{2 - 12 + 1}{8} = - \frac{9}{8} = - 1\frac{1}{8}\]