It is asking for all x-values that satisfy the equation.

I understand the concept of absolute values, so far the problems have been:

lxl=5 to which I answered: x=-5,5

lx-3l=7 ; x=-4,10.

Now I'm on the problem:

ly-3l=8-ly-3l

I'm not sure if there is a way to do this as a formula or if it's just trial and error of plugging in different numbers to see if they would work out.