$\"\"$

The system of equations are $\"\"$ .

Equation 1: $\"\"$

Equation 2: $\"\"$ .

The first equation is already solved for y.

The value of $\"\"$ substitute in the second equation $\"\"$ .

$\"\"$

Divide each side by 9.

$\"\"$

The value of $\"\"$ substitute in the either equation to find x.

Equation 1: $\"\"$

$\"\"$

The solution is $\"\"$ .