2-8x<-1/2 ( x-4) 2-8x<-1/2x+2 -7 i 1/2 x< 0 x>0
2-8x<-1/2(x-4) 2-8x<-1/2x+2 -8x+1/2x<2-2 -7 1/2x<0 /(-7 1/2) x=0