1 3 6 7x 4 July 8, 2019 16 32 64 128 4 7x 1 3 7 6 7x 5 5 7 7x 3 6 5x 1 4 6 2x 1 )+ 3 7x 42 6 2x 1 )- 12 3 7x 4 3 7x 1 )= 4x 6 10 6 2x 1 )= 3 5 4x )+ 7x 1 6+3 7
