Question

Nine tenths minus one third

Answer 1

I think you want to write it

so it's:

9-1/3

Answer 2

27/30 minus 10/30 is 17. You convert both fractions to the same denominator, (30) for instance to get 9/10 to 27/30 you multiply both the top and the bottom by 3. If you need any clarification, just ask! :)