if 2+2 is 5 and 5+5 is 2 and 9+9 is 15 how much is 15+15?

Hey noooooo

2 + 2 = infinity :(

22??

2+2=4+1=5

5+5=10-8=2

9+9=18-3=15

15+15=30-8=22

i am obviously not a genius lol, i hardly knew what i was doing there....

i tried to be smart and figure out a pattern

I think I saw the pattern:

2 + 2 = 5

5 + 5 = 2

Therefore in this question:

a + a = b

b + b = a

Therefore when 9 + 9 = 15 then 15 + 15 = 9.