At this place of intersection of the tracks, do you have priority over a tram that may approach from the left side?

The A-7 "Give Way" sign, placed before the entrance to a roundabout, obliges the driver to give way to all vehicles already on the roundabout. In the situation shown, the tram approaching from the left is already on the roundabout. Therefore, when entering the roundabout, you are required to give way to it.