5 6 x 36 1 July 8, 2019 16 32 64 128 5 14 6 7 x 1 36 5 6 x 15 36 - 5 x (- 36 ➗ 6 ) 15 X 5 6 2 1 36 X 5 6 mũ 2 1 36 36 x 1 6 5 9 36÷ 6