6 2х 7 ) 4 1 4х July 8, 2019 16 32 64 128 6 2х 7 )+ 4 1 4х 2х 6 1 4 3 4х 7 1 2 6 4х-2 6=7 6х-0 2 7 6+2х-(4х-6 4)
