Ummmmm....that's a problem......I don't know how I got there.......actually, I suppose I did
I looked ahead and saw that whatever the solution to x*(1/2) is......it would be added by 5, but would need to be less than six. So x*(1/2)=<1 for the solution to work
2*(1/2)=1 so it would x=<2
) 
Good t see ya