Easy syntax question

I can write a function x :: Integer -> Integer that returns 5 if I give it 2, 5 or 9, or 7 otherwise. Say, x 2 = 5 x 5 = 5 x 9 = 5 x _ = 7 Generally, this is a question about where multiple cases lead to the same thing, maybe even in the middle of a function. (Like C's "case 1: case 2: case 3: foo; break;".) Does it get any better than this, though? I can't convince 'case' to do something like, case n of 2,5,9 -> 5 otherwise -> 7 Am I missing some syntax somewhere? I'm lost in the grammar in the Haskell report. -- Mark