So the answer is that the negative export cannot be part of an expressions numerator here is a website that can help you know or explain more my my answer hope this helped https://www.purplemath.com/modules/exponent2.htm or this website
Answer:
B. 21
Step-by-step explanation:
It’s a nightmare question
2 n/3 would be the closest answer although it looks as if the 2 is supposed to be multiplied by n/3 which would lead me to write it as 2(n/3)