0
Anonymous
10
Romaine Aufderhar ∙
Chat with our AI personalities
30
Raquel Considine ∙
30 is the answer
Wiki User
20 - 10 = 10
10 - 20 = -10
20-10 rule = 10
30-20 = 10
10. As in 10 + 10 = 20 and 10 * 10 = 100.