2 3 8x 1 6 4x 1 July 8, 2019 16 32 64 128 1 2 8x 6 )- 3 4 4x 12 )= 18 X 1 6 (- 1 4x 2 3 )+ 8x 1 2 4x 6 3 4 8x 12 3 8x-(1 6-1 2x)=9 6+(3 7-5x)