,

Subtract from both sides of the equation.

Divide each term in by .

Cancel the common factor of .

Cancel the common factor.

Divide by .

Simplify each term.

Divide by .

Dividing two negative values results in a positive value.

Add to both sides of the equation.

Divide each term in by .

Cancel the common factor of .

Cancel the common factor.

Divide by .

Divide by .

The solution is the set of ordered pairs that make true.

Solve by Graphing x-3y=-3 , -x+3y=3