1 3 (- 6x 15 )- x 5 July 8, 2019 16 32 64 128 1 3 6x 27 )- 1 2 2x 8 )= 2 x 15 )- 5 1 6x 3 5 1 2 x 15 5 6x 10 1 3 x 15
