Make operations on the lists

Hello Everyone. I am a beginner in Dynamo and I have a question

I have a list which contain other lists( in that picture only two but could be more). the small list contatins only 2 items. I want a new list of the absolute positve value of the the substraction of those two items from each small list. How can I do that ?

Hi @Abdelsalam23TAW

here is a solution.


Thanks Alot. worked perfectly. I will try it on bigger list.