Alegbra simplification question? help!!!

i got this answer: n = (10p - 5q) / (-14)

but the textbook answer is: n= (-10 p + 5q) / (14)

why are the positive and negative signs swapped??? i dont get it

You don't leave a minus sign in front of the denominator.
If the denominator begins with a minus sign, then multiply the fraction by (-1)/(-1).

http://www.flickr.com/photos/dwread/7526…

multiply by (-1)/(-1)you'll get the same answer

we need the equation you began with to answer the question x