i dont know but i just cant seem to understand how the inequalities have been obtained

given that 0<lx-2l<1,

i get that it becomes -1<x-2<1

but the book went on to say that

-1<x-2<3

2<3x-1<8

thus l 3x-1 l>2

how is the LHS of the inequalities obtained? namely that it is -1 and 2..