3,2х-2/-4=0,8х-2,4/2
3,2х-1/-2=0,8х-1,2 3,2х+1/2=0,8х-1,2 3,2х-0,8х=-1,2-1/2 2,4х=-6/5-1/2 2,4х=-17/10 Х=-17/24