X 2 x 3 x 4 18 July 8, 2019 16 32 64 128 2 x 7 )- 3 2x 4 )=- 18 X x 3 4 x 3 18 x 2 9 18x 3 x 2 9x 4 )-( x 2 x 4 X x 2 3x 4 18 X 2 x 1 3 x 4 18 X 2 12 2x 3 9 4 3x 18 X 2x 2 3x 4 180