10 2y 2 July 8, 2019 16 32 64 128 10 2y 25 10 2y 20 10 2y (- 2 y 10 2y 25 find y 10 2y 26 2y 10 22 2y 10 2x 2y 10 24 10 1 2y 2 5 X 10 2y 2 2 2y 10 )= 20 X 2y 10 2x y 5 X 2y 10 2x 4y 5 4x 2y 10 2x y 5 X 2y 10 2x 3y =- 8