Решебник по математике 6 класс Ерина Виленкин рабочая тетрадь Часть 1, 2 Часть 2 | Страница 28

\[Стр.\ 28.\]

\[\boxed{\mathbf{2.}}\]

\[\textbf{а)}\ 3 + ( - 5) = - 2\]

\[\textbf{б)} - 4 + 5 = 1\]

\[\textbf{в)} - 6 + ( - 10) = - 16\]

\[\textbf{г)} - 1,5 + 2 = 0,5\]

\[\textbf{д)} - 3 + 3 = 0\]

\[\textbf{е)}\ 1 + ( - 1) = 0\]

\[\boxed{\mathbf{3.}}\]

\[\textbf{а)} - 1 + 2 = 1\]

\[4 + ( - 5) = - 1\]

\[- 3 + 7 = 4\]

\[- 2 + ( - 3) = - 5\]

\[\textbf{б)}1 + ( - 6) = - 5\]

\[- 7 + 8 = 1\]

\[- 4 + ( - 2) = - 6\]

\[- 1 + ( - 6) = - 7\]

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

\[- 6 + 3 = - 3\]

\[5 + ( - 11) = - 6\]

\[- 2 + ( - 5) = - 7\]