8.32.3 Can you answer these questions?

8.32.3.1 How to verify that huge result of Solve?

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=274284

Answering a question at MSE, 
I solve (in 13.1 on Windows 10) 
... 
[equation-solving]
 

asked by user64494 https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=7152 Score of 1

8.32.3.2 FindShortestPath failing with All even when GraphDistanceMatrix succeeds

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=274304

Shortest Path routines are commonly used within more complex optimization methods that work to ensure there are no negative cycles even when there are negative weight edges. Often there are 0 weight ... 
[graphs-and-networks] [precision-and-accuracy]
 

asked by JV3 https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=46831 Score of 1

8.32.3.3 Is Starting wolfram-workbench when Mathematica already running not allowed?

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=274227

There is similar error reported in this question wolfram-workbench-doesnt-launch-mathematica 
I am getting same problem. If I add another comment there, it will not be seen. 
So I am posting this here ... 
[workbench] [licensing]
 

asked by Nasser https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=70 Score of 1