Linear equation and limit

[GarboHoups]

Hi, everyone. I don't know where to start. Help, please.
The system of linear equations consists of n=2m equations.

I need to solve this system and with obtained value solve the limit:

 

[Steven G]

This is a help forum, not a problem solver forum.
Math is not a spectator sport meaning that we want you to be involved in solving this. Actually we expect that you solve it using our help.
What have you tried? Where did you get stuck?
Have you tried to solve this system using concrete values for n? Try that 1st and see what you can learn from the smaller cases. Post back showing your work.