9 5 x 4x1 6 July 8, 2019 16 32 64 128 9 5 x 4 x 1 6 X 5 6 x 1 9 x 3 4 solution 1 5 4 x 6 9 x 12 X 5 6 x 1 9 x 3 4 equation X 5 6 x 1 9 x 2 4 X 5 6 x 1 9 x 3 4 64 8 9 5 1 x 4 x 3 16 9/4 x 5