Can someone explain me how matchmaking works?

normall mmr and ranked mmr are not related

somebody who got to platinum playing only ranked, but who never played normals will still be matched with bronze players in normals

OMG Infinity Edge Thresh! That looks amazing!

I had a game yesterday where the entire other side was silver, our team was two golds a plat and two diamonds.

There is no matchmaking in normals.System just picks some randon guys and throw into the game.Rank doesnt mean shit.

no there is a normal game mmr and a rank mmr however riot dont believe that your rank mmr should influence you normal game mmr its broken. and they should fix it. i mean riot has gone full retard with this one and we all know.....

https://www.youtube.com/watch?v=oAKG-kbKeIo

Rank doesn't matter, it only counts your MMR which means that either they're really bad or you're really good.

Matchmaking is delicious

Matchmaking works?