X 2y 3 2x 3y =- 5 July 8, 2019 16 32 64 128 X 2y 3 2x 3y =- 5 elimination 3 x 2y )- 0 5 2x 3y )- 4 5x 3 x 2y 6 2x 3y 5 If the lines x 2y 3 0 3y 2x 5 0 X 2y )( 2x 3y 4 )-( x y )( 3 2x 5y 2x 3y 13 x 2y 3 5x 2y 27 2x y z 1 x 2y z 3 3y 5z 9 X 2y 3 4x 2y 5x 3y 2z 2x 2y