4 x 7 21 July 8, 2019 16 32 64 128 4 7 x 21 40 4 7 x 21 32 4 7 x 21 8 4 7 x 21 16 4 7 x 21 5 4 7 x 21 1 4 7 x 21 20 4 7 x 21 2 4 7 х 21 32 4 7 х 21 40 4 7 x 3 21 4 21 x 7 in simplest form 4 21 x 7 12 7 x 4 21 60 2 3 4 7 x 11 21