To do this we'll need to convert both 9 2/5 and 8 4/5 from mixed numbers like they are now to improper fractions. Since the denominator of 9 2/5 is in 5ths, we will have to convert 9 into 5ths. 9*5=45, so 9 = 45/5. We still need to account for the additional 2/5: 45/5 +...