Resistances reducation

Can someone eli5 how resistances reduction work ?
I’ve read there are 3 types of reduction but I seem to be too dumb to understand how they all work together.

Like how does the viper constellation work ? From what I read, it multiplies the resistances by 0.8. What I don’t understand is it before or after all the flat -% reduction. If it’s after, it’s bad AF.

here you see how they work together (and the final result of your RR)

or this thread

3 Likes

Exactly what I needed, second post is pure gold.
/close topic.