Evolution does not explain how life was created, therefore one can believe in both creation and evolution.
That would be because evolution has nothing to do with the origins of life - that would be abiogenesis.
If that's the case, however, why do creationists want their nonsense taught alongside or, preferably, instead of evolution?
Playing Cluedo with my mum while I was at Uni:
"You did WHAT? With WHO? WHERE???"