1/6 + 5/9. find the lowest common denominator of 6 and 9(18).
Now find the number of times 6 and 9 go into 18 (3 and 2
respectively) Multiply the numerator by the factors of 6 and 9(1x3
and 5x2 or 3 and 10) put the new numerators over 18(your
denominator)(3/18+10/18) add the numerators 13/18