$\"\"$

\

The system of equations:

\

$\"\"$ and $\"\"$ .

\

Add the equations $\"\"$ and $\"\"$ , and solve for $\"\"$ .

\

$\"\"$

\

$\"\"$

\

$\"\"$

\

$\"\"$ .

\

$\"\"$

\

Substitute equation $\"\"$ in equation $\"\"$ and simplify.

\

$\"\"$

\

$\"\"$

\

$\"\"$

\

$\"\"$

\

$\"\"$

\

$\"\"$ .

\

Therefore, the solutions are $\"\"$ and $\"\"$ .

\

$\"\"$

\

$\"\"$ and $\"\"$ .