$\"\"$

The equations are $\"\"$ and $\"\"$ .

$\"\"$ Equation (1)

$\"\"$ Equation (2)

Since $\"\"$ , substitute $\"\"$ for x in the second equation.

$\"\"$

$\"\"$

Divide each side by negative 3.

$\"\"$

Substitute $\"\"$ in $\"\"$ .

$\"\"$

$\"\"$ \ \ $\"\"$

The solution is $\"\"$ .