I like to cook but not to clean (unequal no comma)
The story works because it's so fundamental, and funny too.
You didn't unlock the prize this time, but don't stop.
Are these two accurate with the comma? There is no subject in either embolded phrases. Would these be wrong without the comma? Are the last two examples not unequal and require no comma ?
Occasionally, a comma is justified simply by the effect it has on the reader. All punctuation exists only to make the artificial process of writing language work. The comma in your first sentence makes "and funny too" sound like an afterthought, which is good.
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Occasionally, a comma is justified simply by the effect it has on the reader. All punctuation exists only to make the artificial process of writing language work. The comma in your first sentence makes "and funny too" sound like an afterthought, which is good. It also stops "so" from bridging over to "funny".
Your second sentence has two independent clauses joined by a conjunction, which