1 half is the same thing as 3 over 6, so this is negative 3 over 6, the same thing as negative 1 half. 4 thirds is the same thing as 8 over 6, and then negative 1 is the same thing as negative 6 over 6. A little bit of arithmetic here, and let's see what we get. If we take 48 and we subtract 64 from 48, we get negative 16, is that right? Yes, we get negative 16. Then if we add 24 to negative 16, you get positive 8. Positive 8 minus 3 is 5.