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