\[\boxed{\text{1077.}\text{\ }еуроки - ответы\ на\ пятёрку}\]
\[\textbf{а)}\ \left\{ \begin{matrix} x - 2y = 6\ \ \ \ \\ 3x + 2y = - 6 \\ \end{matrix} \right.\ \text{\ \ \ \ \ \ \ \ \ }\]
\[\ \left\{ \begin{matrix} x = 6 + 2y\ \ \ \ \ \ \ \ (1) \\ x = - 2 - \frac{2}{3}y\ \ (2) \\ \end{matrix} \right.\ \]
\[(1)\]
\[x\] | \[2\] | \[4\] |
---|---|---|
\[y\] | \[- 2\] | \[- 1\] |
\[(2)\]
\[x\] | \[0\] | \[- 2\] |
---|---|---|
\[y\] | \[- 3\] | \[0\] |
\[Решение:(0;\ - 3).\]
\[\textbf{б)}\ \left\{ \begin{matrix} x - y = 0\ \ \ \ \ \ \ \\ 2x + 3y = - 5 \\ \end{matrix} \right.\ \text{\ \ \ \ \ \ \ }\]
\[\ \left\{ \begin{matrix} x = y\ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ (1) \\ x = - 2,5 - 1,5y\ \ \ (2) \\ \end{matrix} \right.\ \]
\[(1)\]
\[x\] | \[0\] | \[1\] |
---|---|---|
\[y\] | \[0\] | \[1\] |
\[(2)\]
\[x\] | \[- 2,5\] | \[- 4\] |
---|---|---|
\[y\] | \[0\] | \[1\] |
\[Решение:( - 1; - 1).\]