Neutral Numbers Getting Married

I'm uncertain what you're referring to when you say "neutral number". Perhaps you are familiar with a numerology practice different than what is used here.

With traditional Pythagorean numerology, there are no neutral numbers.

The number 9 and the number 7 are compatible numbers.

Whether or not the compatibility of the 9 and 7 would translate into a marriage compatibility depends in large part on which positions the numbers occur within their respective numerology charts. Use the marriage compatibility tool to get a compatibility quotient from Pythagorean numerology calculations.