4 7 5 )- 15 3 July 8, 2019 16 32 64 128 4 5 7 15 х 3 16 4 3x 7 )- 2 x 15 )= 5 3 2x 9 4 3х 7 )- 2 х 15 )= 5 3 2х 9 5 x 4 15 )- 3x 7 6 Simplify 2 by 3 4 5 7 15
