2 7 1 9х=2х 1 5 July 8, 2019 16 32 64 128 2 7 1 9х 2х 1 5 2 7+1 9=2х+1 5 2 7+1 9х=2х+1 5 (2 7)/(2 9 - 1 1) 2 7+1 9=2x+1 5
