@cherold We've both deleted our but I think you're missing a term in your algebraic expression. Let's try it as a story problem:
"Ed really likes a song that came out in 1982. What year was Ed born?"
Aa you see, unresolvable. I associate that particular song with people who'd have been somewhere between 15 and 35 or so in 1982, most of whose birthdates fall well inside the baby-boom period of 1946-64
@pieist I dunno, sounds like a bad 80s song to me, but I guess it may be a fit with the bad late 70s sound.