3 x * 4 x =( 12 x 1 5 July 8, 2019 16 32 64 128 1 4 x 2 3 x 1 12 x 5 2 x 4 5 x 3 11 x2 x 12 1 3 4 x 12 x 1 5 8 9 x 8 12 5 x 12 x 1 2 3 4 5 23 11 16 x 11 3 4 x 3 or 12 x 12 x 5 1 2 1 16 x 4 5 x 12 3 8 x 7 12 x 4 + 3