Simple way to combine predictions from multiple classifiers?

I have predictions from 3 binary classifiers (SVM, RF and NN) and would like to combine them in some way.

I'm aware of the notion of ensemble learning methods but I was wondering if it would be valid to do something as simple as majority voting on the three predictions.

E.g.:

Observation SVM RF NN Overall
One 1 1 0 1
Two 0 0 0 0
Three 0 0 1 0
Four 0 1 1 1


Would this be a reasonable and valid approach?

Thank you.