3 5 1 9 4 7 July 8, 2019 16 32 64 128 1 1 3 5 2 9 х 4 7 4 x 3 )- 5 7 x 1 )+ 9 3 4x 9 4 1 7x 5 Subtract 3 1 5 from 4 7 9