Why is the inner core a solid if it is the hottest layer?

Its considered a solid since it has all the pressure on it from all the other layers, If you compare the outer layer (the one we live on) Its not as solid because its at the top and it does not have the same amount of pressure applied.

Can you give us more information about this question and i will try to you as much as i can

343^x = 49^4-xx = 4-xx+x=42x = 4x = 4/2x = 2therefore x = 2