5х-1 при х=1 1/5, 5*1 1/5 - 1= 5*6/5 -1= 6-1=5
(5х+1)=3, 5х+1=3, 5х=3-1, 5х=2, х=2/5
(-2х-7)=-6, -2х-7=-6, -2х=-6+7, -2х=1, х=1/2
(18х-2)=0, 18х-2=0, 18х=2, х=2/18, х=1/9
(6х+4)=3, 6х+4=3, 6х=3-4, 6х=-1, х=-1/6
(-2х+7)=1, -2х+7=1, -2х=1-7, -2х=-6, х=3
(16х-4)=0, 16х-4=0, 16х=4, х=4/16, х=1/4