pokemon who is week and resistant?

[MetaMetaGross]

how is damange worked when a pokemon is both resistant, and week to the attacking pokemon. For example. Jolteon EX is week to fighing type, but resistant to Metal. Delta Marowak is both fighing and metal due to it being a Delta pokemon.

 

[PokePop]

Double the damage for Weakness first, then -30 for Resistance.