Logs for AlexandreOliveira 

16-Nov-20
Im solving this for the MoM series in Porto, If Im ever in the area, I'll look for this one.

thank you, I had math in college and know my matrixes, the hard was to understand the problem 
 
07-Nov-20
Heck, this was hard. I have to thank reddit's user u/Salgado88 for helping my out.

Im doing this for the Master Of Mystery series, If I'm ever in Australia, I'll come for this one. Thank you.