|2х-3|=|4-7х| даю много баллов
|2x-3|=|4-7x| 1) -2x+3=4-7x -2x+7x=4-3 5x=1 x=1/5 2) 2x-3=4-7x 2x+7x=4+3 9x=7 x=7/9
|2х-3| = |4-7х| 2х - 3 = 4 - 7х 2х - 3 - 4 + 7х = 0 9х - 7 = 0 х = 7/9 или 3 - 2х = 4 - 7х 3 - 2х - 4 + 7х = 0 -1 + 5х = 0 -5х = -1 х = 0,2