X 3 7 27 July 8, 2019 16 32 64 128 3 x 7 2 27 3 x 7 1 27 270 x 3 7 3 7 x 14 27 3 x 7 27 135 3 x 7 27 2x 3 x 7 )- 15 27 3 x 2 7 27 2x 5 x 2 3 7 27 (- 3 7 x =- 27 343 3 3 x 2 7 2746 9x 7 x 3 )= 27 11 8 x 3 7 27 3 7 6 x 3 27 3 phần x 7 27 135
