There are multiple solids here, but there are areas where 2 overlap and 3 overlap, so is there an easy way to extract the areas where n overlap?
unnamed.gh (6.8 KB)
Not without posting a file 
I’m sorry. I attached a file..
Not yelling at you but you forgot to include the initial geometry 
*In the meantime:
You can use Solid Intersection and feed it your spheres but it will leave you with some duplicate solids unless you distinguish double vs triple overlaps.
Assuming by ‘areas’ you mean the solids resulting from these overlapping intersections, check this:
solid-overlap-solids.gh (29.3 KB)
Thank you. That’s a very useful answer.