If it's the metal line that broke, then it's pretty straight forward.
EDIT: well... it depends on where it broke, because a common place for breaks it at the belt that holds the four lines that runs into the rear, if one is broke, you might go to fix it, and break the rest, and have to do the whole rear to front replacement.
This is the best picture of what I'm talking about, that I could find.

Picture is courtesy of
beaudeen.