3 x 7 8 5 2 July 8, 2019 16 32 64 128 3 x 7 )+ 8 2x 5 3 4 7 x 8 2 5 3 7 x 2 3 8 1 2 5 8 3x 7 )- 3 8 x )= 5 2x 1 2 3 x 5 8 7 12 3 6 x 1 2 7 8 6 5 3 x 5 )-( 8 2x )= 4 x 7 )+ 2x 3 7 8 x 6 2 5 3 x 7 2 5 2x 2 8 3 5 7 8 15 x 31 26 8 5 2 7 x 3 9