1)

\

The equations are

\

$\"\"$

\

Simplify.

\

$\"\"$

\

The values of $\"\"$

\

2)

\

The equations are

\

$\"\"$

\

Simplify.

\

$\"\"$

\

The values of $\"\"$

\

There is no solution.

\

3)

\

The equations are

\

$\"\"$

\

Simplify.

\

$\"\"$

\

The values of $\"\"$

\

4)

\

The equations are

\

$\"\"$

\

Simplify.

\

$\"\"$

\

The values of $\"\"$