\[Стр.\ 50.\]
\[\boxed{\mathbf{10.}}\]
\[\textbf{а)} - x = - 5\]
\[x = 5\]
\[Ответ:5.\]
\[\textbf{б)} - y = - 3,4 - 9,1\]
\[- y = - 12,5\]
\[y = 12,5\]
\[Ответ:12,5.\]
\[\textbf{в)} - y = - 10,6 + 7\]
\[- y = - 3,6\]
\[y = 3,6\]
\[Ответ:3,6.\]
\[\textbf{г)} - 6\frac{1}{7} + y = - 2\]
\[y = - 2 + 6\frac{1}{7}\]
\[y = 4\frac{1}{7}\]
\[Ответ:4\frac{1}{7}.\]
\[\textbf{д)} - 8\frac{3}{11} + x = - 11\]
\[x = - 11 + 8\frac{3}{11}\]
\[x = - 2\frac{8}{11}\]
\[Ответ:\ - 2\frac{8}{11}.\]
\[\boxed{\mathbf{11.}}\]
\[a\] | \[10\] | \[- 10\] | \[15\] | \[- \frac{1}{2}\] | \[- 0,7\] | \[6,2\] | \[- 5,8\] | \[\frac{1}{5}\] | \[4\frac{3}{4}\] | \[- 2,6\] |
---|---|---|---|---|---|---|---|---|---|---|
\[b\] | \[3\] | \[5\] | \[- 3\] | \[- \frac{1}{4}\] | \[1,2\] | \[- 3,4\] | \[- 4,9\] | \[- 0,5\] | \[- 3,5\] | \[3\frac{3}{5}\] |
\[a - b\] | \[7\] | \[- 15\] | \[18\] | \[- \frac{1}{4}\] | \[- 1,9\] | \[9,6\] | \[- 0,9\] | \[1\] | \[8,25\] | \[- 6,2\ \] |