Answer:
19 and 21
Step-by-step explanation:
9 10
33 55
times
then equals 21
9+10=19
Answer: If you want the real answer... 19.
Step-by-step explanation:
If you have 9 cookies, and bake 10 more cookies, how many more cookies will you have? 19.
9+10=19.
If you have people at your school still making references to a dead joke/meme where someone states that 9+10=21, I am sorry, grow up.