The answer could be negative or positive. We are not given specific as to whether or not the starting number is positive or negative so therefore it could be either.
Hope this is helpful :)
<span>3.7 since the digit after the tenths digit is less than five</span>
<span>3n + 4 = 7
</span><span>3n = 7 - 4
3n = 3
n = 1</span>