Giải hệ phương trình sau

----- Nội dung ảnh -----
```
c)
\left\{
\begin{array}{l}
2(x - 2) + 3(1 + y) = -2 \\
3(x - 2) - 2(1 + y) = -3
\end{array}
\right.

10)
\left\{
\begin{array}{l}
2(x + y) + 3(x - y) = 4 \\
(x + y) + 2(x - y) = 5
\end{array}
\right.

11)
\left\{
\begin{array}{l}
2(x + 1) + 3(x + y) = 15 \\
4(x - 1) - (x + 2y) = 0
\end{array}
\right.
```