Okay 5/9 + 7/9
I know you change the denominator so
5/6 = 15/18 or 3/18
7/9 = 14/18 or 2/18
which one?
You only change the denominator when they are not the same. You don't need to change anything about those fractions -- except simplify your answer.
I know I put them wrong I mean 5/6 + 7/9
5/6 = 15/18
7/9 = 14/18