2 x 9 7 4x July 8, 2019 16 32 64 128 2 x 9 =- 7 4x 3 2 x 9 7 4x 8 2 x 7 )= 6x 9 4x 37x 1 2 x 1 4 9 4x 7 5 2x 9 2x 7 2 4 x 9
