7x 7 6x 3 July 8, 2019 16 32 64 128 7x 7 6x 30 7x 7 6x 4 x 3 7 6x 7x 3x 2x 5 6x 7 3x 7x 27 6x 7 =- 3x 7x 17 6 4x 3 7x 7 6x 7x 21 3x 13 7 6x 16 3 7x 7 )=- 6 6x
