It is, however, many people tend to struggle as their brains are adapted to learning one language at a time. Practice a lot and you should be fine.

if you have enough time for each, then I don´t see a problem

I don't think it's a good idea to learn two or more languages at the same time. It's much better for you to foucs on one language until you reach an advanced level, then move on to the next one, otherwise you're just wasting your energy and time unless you're a language genius..