5y 9 2y 6 July 8, 2019 16 32 64 128 2x 5y 9 4x 2y 6 6x 5y 9 3x 2y 6 =- 1 9 2 3y 6 2y 5 y 15y 4 2y 9 5 y 6 0 6 y 5 2y 7 9 5 y 9
