# Algebra

posted by
**John** on
.

As x ranges over all real values, what is the minimum value of f(x)=|x-123|+|x-456| + |x-789| ?

posted by
**John** on
.

As x ranges over all real values, what is the minimum value of f(x)=|x-123|+|x-456| + |x-789| ?