How do Supreme Court justices decide how to rule in a case?

reserching the facts and appliying the facts to the law.

There are 9 justices or judges, that's an odd number so each judge picks a side and the side with more judges wins.

Explanation:

Every justice's vote counts equally, but one justice has additional responsibilities. The Chief Justice leads meetings of the Court and often decides which justice writes opinions explaining the Court's rulings.

articles of confederation