First put the two into a common denominator (9 x 6)
then multiply the numerator by a number that will give you the LCD (lowest common denominator)
ex. 9 x 6 = 54
9 x what =54 /54 + 6 x what =54 /54
6/54 + 9/54
9+6 = 15 (over 54)
15/54
15/54 is the answer, since it can not be simplified.
