I need help with these please.

Question

What is the solution for 0.7x+5¡Ü1.1x-8?

What would be the solution for,
15a+5b-12a-8b=

Answer 1

<<What is the solution for 0.7x+5¡Ü1.1x-8?>>
I have no idea what the ¡Ü symbol represents

<<What would be the solution for,
15a+5b-12a-8b= >>
Add up the a terms and the b terms separately, and get 3a - 3b = ?

This is not really a solution; it is a simplification