5 x 4 2 7 13 July 8, 2019 16 32 64 128 4 x 2 )/ 5 7 5x 13 13x 5 x 2 )= 4 2x 1 )+ 7 5 x 4 mũ 2 7 13 4 x 2 ⁄ 5 7 5x ⁄ 13 5 x 2 )- 4 13 7 x 1 5 x 7 = 35 5 x 5 x 5 x 5 x 5 5 x 5 x 5