Find the value of m< 2 + m< 4

This is a strange problem!

Know how to graph m<2?  Plot an empty circle at m=2 and from there draw a vector to the left.     m<4?   Plot an empty circle at m=<4 and from there draw a vector to the left.  Between m = 2 and m=4 there's a set of numbers {2<m<4}.  But to the left of m=2 is an entirely different set of numbers made up of 2 subsets:  m<2 and m<4.  Due to the addition sign in the given statement (above), this set would be 2m, only for x<2.