4 x 6 21 July 8, 2019 16 32 64 128 1 4 x 6 21 4 x 6 2 21 14 4 x 21 6 X 6 21x 4 35x 2 7 13 x 4 21 6 X 4 3x 6 x 21 3 x 4 2 x 6 21 21 3 4 x 6 21 x 4 6 is equal to 2x 3 3 4 x 6 21 4 6 x 2 4 )= 21 6x 6 1 4 x 16 21 3