GrassFighting
Grass/Fighting weaknesses
Grass/Fighting is weak to Flying, Fire, Ice, Poison, Psychic and Fairy, and takes 4× from Flying.
When Grass/Fighting Pokémon are hit
4×Hits hardest
2×Super effective
½×Not very effective
Its two types separately
Multiply the two to get the result. For example, Flying deals 2× × 2× = 4×.