9 - 6 7x - 2x 3 July 8, 2019 16 32 64 128 9 6 7x 2x 3 2 7x 6 )= 7 2x 3 )+ 9 2x 3y 6 7x 3y =- 9 5x 2x 3 =- 6 9 7x
