X 3y 1 3 4x y 2 July 8, 2019 16 32 64 128 X 2 xy 3y =- 1 4x y 3 X 1 3 y 4 4x 3y 3 ax )- 2x 1 x y 3 4x 3y 26 X y z 1 2 3 vĂ 4x 3y 2z X - y = 3