And it looks like, let's see, our least common multiple of all of these denominators is going to be 6. So let's put everything over a denominator of 6. So 9 halves is the same thing as 27 over 6. 64 thirds is the same thing as 128 over 6. 15 is the same thing as 90 over 6. 1 half is the same thing as 3 over 6. So this is, we distribute the negative signs.