3 15 x 7 14 July 8, 2019 16 32 64 128 3 7 x 14 15 as a fraction 3 11 x 7 2x 14 15 as a fraction 14 15 x 3 7 3 5 3 11 x 7 2 x 14 15 7 15 x 3 14 13 phần 20 3 7 15 31 series 3 14 x 7
