19. If you have 9 ones and 10 ones, 10 + 9 = 19. Correct me if I'm wrong, but I think the answer is 19.
PEMDAS is correct, Parenthesis, Exponents, Multiplication and Division (left to right), and finally Addition and Subtraction (left to right).
Another way to remember it is Please Excuse My Dear Aunt Sally.
Llama on!
MamaLlama
Yes, everyone knows that
YOUR MY NEW BFF NOW TURTLES4LIFE!
thanks, that totally helped! NOT
Lot's of hairs
Thank you! I got a totally different answer, but I see how you did it! Thanks again!