1 3 x 21 July 8, 2019 16 32 64 128 1 3 x 210 1 3 x 21 5 1 3 x 21 2 1 3 x 2160 1 3 x 21 4 1 3 x 21 7 1 3 x 216 1 3 x 2116 1 3 x 2187 1 3 x 2100 1 3 x 21 5 as a fraction 1 3 x 21x 1 3 x 21 )= 19 1 3 х 21 3 1 9 х 21