5 2 3 )- 7 18 July 8, 2019 16 32 64 128 5 * 3 20 and 7 * 2 18 what is 6 * 4 18 3x x 5 2 x 3 7 x 3x 18 3 7 2 5 solution 7 9 2 3 and 5 18 Tính a 5 2 3 b 18 7 2
