X 3y 7 2x y 4 July 8, 2019 16 32 64 128 X 7 5 2x y 4 3y 5 Solve x y 7 2x 3y 4 X 4y 2x 3y 7 =- x y 1 X 3y 1 4x 3y 2x y 7 X 2y z 7 2x 3y z 7 x y 4 X y 4 2x 3y 7 3x 2y 8
