2011 Mitsubishi Lancer rear wheel bearings replacement

We going to replace rear wheel bearing on my friend car. Passenger side rear wheel bearing is making humming noise on highway speed. It get louder the faster the vehicle travel so he want to replace both rear wheel bearings. I am not a professional technician, nor a certified ASE. I only work on friends and family members' cars. This is not a tutorial video, it is for reference and entertainment purposes only. Do your research and attempt at your own risk. Thank you.