Which equation represents this sentence?

Three less than the product of seven and a number is four more than the number.

A. 3-7n+4=n

B. 7n-3+4=n

C. 3-7n=n+4

D. 7n-3=n+4

This question has very questionable use of wording. It looks very similar to a question that just wants to confuse you, but I personally think it is B.

three less than the product of seven = 7n-3

and a number is four more = + 4

than a number = (=n)

7n-3+4=n

Which is B. Tell me if I'm wrong.