2 3 x 4 18 July 8, 2019 16 32 64 128 2 x 7 )- 3 2x 4 )=- 18 X 4 6x 3 2x 2 18x 23 X 4 8x 3 18x 2 X 4 4x 3 18x 2 12x 9 0 X 4 2x 3 12x 2 18x 27 X 4 2x 3 17x 2 18x 72 2 x 4 3x 18 3 x 4 )+ 18 2 x 5 X 2 4 2x 3 3 x 18 6 2 x 3 )+ 18 4 10x 9 )= 72 (- 1 3 2 x 18 /- 4 2 3x 4 18 1 4x 3x 2 x 4 180 3 2x 2 )-( x 4 ) 18