X 9 4 36 July 8, 2019 16 32 64 128 9 х 4 36 4 x 9 )- 36 40 4 9 x 360 9 x 4 2 36 4 9 x 36 1 4 9 x 25 36 X 4 x 9 13 36 4 over 9 x 36 4 9 x 27 36 36 x 4 9 bằng bao nhiêu