2x 3y 6 x y 8 July 8, 2019 16 32 64 128 2x 3y =- xy 8 x 6 y 5 2x 4y 8 x 3y − 6 x y 2x 3y z 6 x 2y 4z 8 x y 4z 4 X y 8 dan 2x 3y 6 3x + 2y = 6 2x + 3y