2 7 x 4 21 July 8, 2019 16 32 64 128 2 3 4 7 x 11 21 X 7 4 4 x 7 2 21 0 2 7 x 7 16 21 4 2 x 3 )/ 7 x 2 13x 4 21 7 x 2 )= 4 x 1 )- 21 4 7 x 4 7 x 21 2 divided by 10 4 7 x 4 7 x 21 2 10 14 21 7 4 x 2 2x 7 2 7x4
