This one is easy; all you have to do is simply add the two fractions to get 8/10 for the answer; however, you must simply. 8/10 is 4/5. The second part is to subtract that 4/5 from the whole (“1”, or “1/1”). In this case, subtract 4/5 from 5/5 and you’ll get 1/5 for the second part of the answer. :)