+1839 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.
+135 
You can arrange the cities into a straight line like this. Therefore, the distance from Capital City to Yourtown is 1 mile.
