\[Стр.\ 48.\]
\[\boxed{\mathbf{6.}}\]
\[\textbf{а)} - 9 - ( - 20) = 11\]
\[9 - 14 = - 5\]
\[- 9 - ( - 14) = 5\]
\[\textbf{б)} - 8 - 7 = - 15\]
\[9 - 7 = 2\]
\[- 9 - ( - 7) = - 2\]
\[\textbf{в)} - 9 - 2 = - 11\]
\[- 8 - ( - 24) = 16\]
\[- 7 - 13 = - 20\]
\[\textbf{г)}\ 8 - ( - 7) = 15\]
\[- 6 - 5 = - 11\]
\[13 - 9 = 4\]
\[\boxed{\mathbf{7.}}\]
\[Выражение\] | \[Сумма\] | ||
---|---|---|---|
\[Положительное\] \[слагаемое\] |
\[Отрицательное\ \] \[слагаемое\] |
\[Общая\] | |
\[- 5 + 8 + ( - 3) + 12\] | \[20\] | \[- 8\] | \[12\] |
\[- 6 + 9 + ( - 11) + 10\] | \[19\] | \[- 17\] | \[2\] |
\[- 7 + 6 + ( - 2) + 3\] | \[9\] | \[- 9\] | \[0\] |
\[11 + ( - 6) + 9 + ( - 14)\] | \[20\] | \[- 20\] | \[0\] |
\[- 14 + 9 + ( - 5) + 11\] | \[20\] | \[- 19\] | \[1\] |
\[- 10 + 6 + ( - 8) + 14\] | \[20\] | \[- 18\] | \[2\] |
\[10 + ( - 15) + 11 + ( - 12)\] | \[21\] | \[- 27\] | \[- 6\] |