4x 3y 12 x 1 July 8, 2019 16 32 64 128 4x 3y 12 x 2y 14 X y 10 4x 3y 12 4x 2y 13 x 3y 12 (4x-3y) (2x + 5y) = 12 19 then x y X 1y 12 4x 3y 15 X y 12 4x 3y 15 3x+4y 12 4x+3y 12