ГДЗ по математике 6 класс Дорофеев Задание 913

\[\boxed{\mathbf{913\ (913)}\mathbf{.}\mathbf{\ }Еуроки\ - \ ДЗ\ без\ мороки}\]

\[\textbf{а)}\ \left( - \frac{1}{2} \right) + ( - 5) = - \left( \frac{1}{2} + 5 \right) = - 5\frac{1}{2}\]

\[\textbf{б)}\ ( - 7) + \left( - \frac{2}{3} \right) = - \left( 7 + \frac{2}{3} \right) = - 7\frac{2}{3}\]

\[\textbf{в)}\ \left( - \frac{1}{3} \right) + \left( - \frac{1}{2} \right) = - \left( \frac{1}{3} + \frac{1}{2} \right) = - \left( \frac{2}{6} + \frac{3}{6} \right) = - \frac{5}{6}\]

\[\textbf{г)}\ \left( - 1\frac{2}{5} \right) + \left( - \frac{1}{3} \right) = - \left( 1\frac{2}{5} + \frac{1}{3} \right) = - \left( 1\frac{6}{15} + \frac{5}{15} \right) = - 1\frac{11}{15}\]