,

Multiply each equation by the value that makes the coefficients of opposite.

Simplify .

Apply the distributive property.

Rewrite as .

Multiply .

Multiply by .

Multiply by .

Multiply by .

Add the two equations together to eliminate from the system.

Divide each term in by .

Cancel the common factor of .

Cancel the common factor.

Divide by .

Divide by .

Substitute the value found for into one of the original equations to solve for .

Move all terms not containing to the right side of the equation.

Add to both sides of the equation.

Add and .

The solution to the independent system of equations can be represented as a point.

The result can be shown in multiple forms.

Point Form:

Equation Form:

Solve by Addition/Elimination x+y=-6 , x-y=12