7 9 x 5 18 July 8, 2019 16 32 64 128 7 9 x 5 18 x =- 3 7 4 9 x 49 5 18 7 9x 5 18x 1 4x 1 6 11 9 x 7 2 5 18 5 8 9 x 7 1 18 7 12 x 5 18 2 4 9 9 5 x 7 )= 18y 3x 5 18 3x 7 9 x 6 7 5 x 9 5 + 9 = 14