5x 5 3x 9 x 4 July 8, 2019 16 32 64 128 1 5 5x 5 )+ 3x =- 9 1 3 x 4 X 3x 9 5 4 5x 12 3 5 x 5 x 5 x 5 x 5 5 x 5 x 5
