2x x 2 3y y 1 =- 4 July 8, 2019 16 32 64 128 X 3y 2 5 4 2x y 2 1 2x x 2 3y y 1 =- 4 x x 2 2y y 1 1 3 X 3y 2 5 4 2x y 2 1 igualacion 2x + y = 4 2x + 3y