LLVM 20 is enough to run softwares requiring previous versions ?

[aug7744]

Hello. Thanks for reading my topic.
Here Ubuntu 24.04.3.
Here when installing some softwares try install LLVM 17 , 19 and 20.
If installing only LLVM 20 not need install previous version ? Softwares using LLVM previous versions automatically use the updated LLVM version 20 ?
I only want avoid installing the same dependecie if the newer is enough.

Have an nice week.