posted by JJ .
the numerator of a fraction is one-half the denominator! If the numerator is is increased by 2 and denominator is decreased by 2, the value of the fraction is 2/3. What is the numerator of the original fraction?
d = 2n
(n+2) / (2n-2) = 2/3
Now just solve for n. Be sure to check your answer.