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The equations are

                           Equation (1)

                    Equation (2)

Since the coefficients of the x-terms are additive inverses, you can eliminate these

terms by adding the equations. Add the equations to eliminate variable x.

Write the equations in column form and add the corresponding columns.

                          (Divide each side by negative 3)

                                 (Cancel common terms) \ \

                                    (Divide: )

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Now Substitute – 2 for y in either equation to find the value of x.

                          (Equation 1)

                   (Replace y by –2)

                         (Multiply: )

         (Subtract 10 from each side)

                         (Additive inverse property: ) \ \

                                   (Subtract: )

                              (Divide each side by 3)

                                   (Cancel common terms)

                                      (Divide: )

The solution is .

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The solution is .