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x<-1 the absolute value of x-4 is x+4 so you would subtract 4 from 3 to get -1 |x-4| < 3 x+4<3 -4 -4 x<-1
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x<-1 the absolute value of x-4 is x+4 so you would subtract 4 from 3 to get -1 |x-4| < 3 x+4<3 -4 -4 x<-1