Hi, I'm new to this forum so I would like to apologize in advance if I mess up with anything ^^

I've been having trouble with Module inequations, specially one that has been bugging me for quite some time. Please keep in mind that English is my second lenguage, so any mathematical terms that I might use is roughly a translation from my native lenguage (portuguese)

Ok, then here's the Inequation:

|x-1| - |x+2|> x

I don't know how should I begin when trying to approach a solution, any help is really appreciated ^^