3 2x 5 )- 7x 12 July 8, 2019 16 32 64 128 3 2x )+( 4 3x )+( 5 5x )= 12 7x 5 3 2x )-( 12 7x )= 0 2x 7x 5 =- 12x 3 6 3 2x 12 4 (- 7x 5 4x 12 2x 5 7x 3