How do you simplify #13 - 5 + 1 # using PEMDAS?
The problem arises in identifying the adds and the subtracts!
The question does NOT mean
Remember that a sign belongs to the number on the right.
What we actually have is
I prefer to have students rearranging the terms first, with the ADDS at the beginning and the SUBTRACTS at the end.
Or just work from left to right.