Решебник по математике 6 класс Ерина Никольский рабочая тетрадь Часть 1, 2 Часть 1 | Страница 45

\[\mathbf{Страница\ 45.}\]

\[\boxed{\mathbf{9.}}\]

\[x = 3:\]

\[- 20 + x = - 20 + 3 = - 17.\]

\[a = - 6:\]

\[a + ( - 26) = - 6 + ( - 26) =\]

\[= - 32.\]

\[b = - 8:\]

\[- 16 + b = - 16 + ( - 8) = - 24.\]

\[c = - 3:\]

\[c + ( - 10) = - 3 + ( - 10) = - 13.\]

\[\boxed{\mathbf{10.}}\]

\[\textbf{а)}\ 1)\ большего;меньший.\]

\[2)\ больше.\]

\[\textbf{б)}\ большим.\]

\[\textbf{в)}\ разности.\]

\[\textbf{г)}\ положительное.\]

\[\textbf{д)}\ отрицательное.\]

\[\textbf{е)}\ нулю.\]

\[\boxed{\mathbf{11.}}\]

\[10 + 6 \rightarrow +\]

\[- 4 + 5 \rightarrow +\]

\[- 18 + 9 \rightarrow -\]

\[- 27 + ( - 6) \rightarrow -\]

\[47 + ( - 14) \rightarrow +\]

\[- 47 + ( - 14) \rightarrow -\]

\[- 49 + 60 \rightarrow +\]

\[- 14 + 5 \rightarrow -\]

\[\boxed{\mathbf{12.}}\]

\[\textbf{а)} - 5 + 10 = 5\]

\[5 + ( - 10) = - 5\]

\[17 + ( - 9) = 8\]

\[\textbf{б)}\ 12 + ( - 4) = 8\]

\[- 24 + 11 = - 13\]

\[65 + ( - 45) = 20\]

\[\textbf{в)}\ 9 + ( - 17) = - 8\]

\[11 + 9 + ( - 4) = 16\]

\[- 40 + ( - 16) + 32 =\]

\[= - 56 + 32 = - 24\]

\[\textbf{г)}\ 200 + 83 = 283\]

\[19 + ( - 8) + ( - 2) = 9\]

\[- 9 + ( - 9) + ( - 9) = - 27\]