Marc simplified a polynomial expression, as shown. which sentence best describes marc's error? he divided incorrectly. he did not work from the inside out. he combined terms that were unlike. he did not distribute the negative sign.

He did not distribute the negative sign.

Step-by-step explanation: I just did the assignment

my answer is$ 12

step-by-step explanation:

because 15 -2=12

step-by-step explanation:

because 1/3 is a fraction. we can tell because there is a divisor symbol between the 1 and the 3. if we were to add 2 fractions together, we would add the numerators, which is the number on top, but not the denominators, which is the number on the bottom

1/3+1/3=2/3

hope this !