what is 1 fifth plus 1 fourth plus 3 eights?

1/5 + 1/4 + 3/8

First you want to have all the numbers with the common denominator, which would be 40

8/40 + 10/40 + 15/40

Now add them all together

33/40

And you cannot simplify that so it is your final answer!

Thank you Saseflower.  

I'll second Melody.....your answers are well-presented, saseflower...!!!