of the 43 presidents 15 were elected to 2 terms. what fraction of us presidents in simplest form was elected to serve two terms and it's not 15/43 what am I missing

I see nothing wrong with your answer.

Are you sure you have your numbers copied correctly?

3/8.6

To find the fraction of U.S. presidents who were elected to serve two terms, we need to divide the number of presidents who served two terms by the total number of presidents.

You correctly stated that there were 15 presidents who served two terms. However, the numerator of the fraction should be the number of presidents who served two terms, while the denominator should be the total number of presidents.

Since there were 43 presidents in total, the fraction of U.S. presidents who were elected to serve two terms is 15/43. Therefore, there doesn't appear to be anything missing, and the fraction in simplest form is indeed 15/43.