9 14 x 2 7 July 8, 2019 16 32 64 128 X 9 14 7 2 5 9 20 х 2 3 5 14 x 7 25 9 2 7 x 52 3 14 3 14 x 7 9 x 2 7 Divide 14x2 - 53x = 45 / 7x - 9 1 14 x 2 5 x 7 9 Tính 9 14 x 7 2 x 8 15 9 14 x 7 2 x 8 15 9 14 - 2/7 14 x 7 14 x 9/7
