7 2х-5 4 July 8, 2019 16 32 64 128 7 2х 5 4 7 2х 5 4х 7 2х 4 5 7х 2х 7 4 5 8 3х 7 5 2х 4 7 2х 1 4 5 2х 7 3 5х 4 5 7х-5 2 4 72-2 5х=2х+2 92 5 7×4 2
