Answer:

n= 21
Explanation:
The equation is simple, you just have to reason the sentence, the quotient of a number, this means that the result of the division is 3.5, and the number has to be divided by 6, so the equation would end up looiking like this:

As 6 is dividing and you want to clear N, you just put it on the other side of the equation multiplying, and you end up with this:
n=6(3.5)
n=21
So your answer for this equation would be n= 6.