Question

What im asking is like when a pokemon is grass and fire and its opponent uses a water move super effective against the fire but not very effective on the grass what does it make ??? super effective plus normal??

Comments

I was wondering the same thing.

Answer 1

As Speedy said, but if you want details:
Without effect: x0
Not very effective: x0.5
Regulary effective: x1
Super effective: x2

So, Water attack on Fire/Grass should have NOT VERY - SUPER EFFECTIVITY (1x0.5x2=1) which is same as regular effectivity

Answer 2

No it makes neutral damage, like rock/ground adds the water and grass weakness to make 4x weakness. Posion and flying makes 4x fighting resistance so they cancel or strengthen weaknesses and resistances. also immunities stay immunities