[Haskell-beginners] Type variables

I put this into ghci makeTriple :: a -> b -> c -> (a,b,c) makeTriple x y z = (x,y,z) then as expected

:t makeTriple : makeTriple :: a -> b -> c -> (a, b, c)

but then on a whim I try this

:t (makeTriple 123 "Hi" 234.0) (makeTriple 123 "Hi" 234.0) :: (Fractional c, Num a) => (a, [Char], c)

I retry

:t (123,"Hi",234.0) (123,"Hi",234.0) :: (Fractional c, Num a) => (a, [Char], c)

What is this telling me? I'm not experienced enough to decode this. LB