,

Simplify each term.

Multiply by .

Multiply by .

Add and .

Simplify each term.

Multiply by .

Multiply by .

Subtract from .

Write the system of equations in matrix form.

Perform the row operation on (row ) in order to convert some elements in the row to .

Replace (row ) with the row operation in order to convert some elements in the row to the desired value .

Replace (row ) with the actual values of the elements for the row operation .

Simplify (row ).

Perform the row operation on (row ) in order to convert some elements in the row to .

Replace (row ) with the row operation in order to convert some elements in the row to the desired value .

Replace (row ) with the actual values of the elements for the row operation .

Simplify (row ).

Use the result matrix to declare the final solutions to the system of equations.

Divide each term in by .

Cancel the common factor of .

Cancel the common factor.

Divide by .

The solution is the set of ordered pairs that makes the system true.

Solve Using Matrices by Elimination -16x*1+12x*2=4 , 12x*1-9x*2=-3