Question in PPL Nav

[Sam1002]

Hi everybody,
First of all am not sure if this is the correct place to ask this question,

I have problem to understand the correct way to solve the below two problems:

Magnetic heading 075
Drift 10 left
To return back on opposite track what would be your magnetic heading?

Magnetic heading 310
Drift 5 right
To return back on opposite track what would be your magnetic heading?

Thanks in advance