x+1=3
x=3
y=4
(n/2)+3=4
x=4
x=2
y=3
n=3
5y-4=6
(3n/2)-2=4
3n+2=11
n=2
n=4
4x-4=12
-5y-3=-23
6y-7=11
8x+2=26
y=2
