Geometry

Mytown  2  Capital City  1 Yourtown 4  Little Village

Capital City - Yourtown =  1 mile

There are four cities: Capital City, Little Village, Mytown, and Yourtown.  The distance from Capital City to Little Village is $5$ miles.  The distance from Capital City to Mytown is $2$ miles.  The distance from Mytown to Yourtown is $3$ miles.  The distance from Little Village to Yourtown is $4$ miles.  Find the distance from Capital City to Yourtown, in miles.  

          It could work like this.  Let each x represent one mile.    

           x          x          x          x          x          x          x          x         

          MT                  CC       YT                                          LV      

_.