$\"\"$

\

Elimination Method:

\

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

\

$\"\"$ Equation (1)

\

$\"\"$ Equation (2)

\

Multiply by 3 in equation 1.

\

$\"\"$

\

$\"\"$

\

$\"\"$ Equation (3) $\"\"$

\

Since the coefficients of y-terms are additive inverses, these terms can be eliminated by adding equations. Write the equations in column form and add the corresponding columns.

\

$\"\"$

\

Divide each side by 2.

\

$\"\"$

\

$\"\"$

\

$\"\"$

\

Find the y, substitute $\"\"$ in second equation.

\

$\"\"$

\

$\"\"$

\

Add 19.2 to each side.

\

$\"\"$

\

$\"\"$

\

Divide each side by 2.1.

\

$\"\"$

\

$\"\"$

\

$\"\"$

\

The solution of the system is $\"\"$ .