Weird Issue with Solve Function

[Jan 11]

This is more difficult. We're dealing with big numbers.
Others tried to solve this case before me.
I've also tried to solve this system of equations. I did it by looking for an approximation (lower boundary, upper boundary). See it in the screenshots. HP PRIME is a very powerful calculator. It solves almost every equation, inequality, equation system. But if there are problems, the outstanding Parisse will fix it quickly.