Question 122848
I correct your solution then:

Given g(x)=2x-3, find g(x+2)-g(x): 
My solution: find g(x+2)
=2(x+2)-3
=2x+1          (look here)
Since g(x+2)=2x+1,
2x+1-(2x-3)
2x-2x+1+3
=1+3
=4