7 9 x 5 18 July 8, 2019 16 32 64 128 7 4 9 x 49 5 18 7 9x 5 18x =- 3 7 9x 5 18x 1 4x 1 6 7 18 5 9 x 1 25 5 8 9 x 7 1 18 7 12 x 5 18 2 4 9 7 5 x 9 5 + 9 = 14
