[![enter image description here](https://i.stack.imgur.com/yqRrH.png)](https://i.stack.imgur.com/yqRrH.png)

The task is to calculate *i* here, and the answer is 0.5A (specifically -0.5 due to its direction) but I have no idea how to get that. I've tried separate calculations of the circuit with only 1 voltage source and adding them up but I seem to be getting 1A. Any hints or tips?