(4q+2)-(2q-3) if i simplify it will it be 2q+5?

correct
You can drop the parentheses and rearrange the terms to get
(4q+2)-(2q-3)=4q-2q + 2-(-3)=2q+5

definately correct! i don't think that it is that hard if you drop the brackets you can't doubt it!