Question 45687
   1/3 + 1/5 + 1/10
=  (1/3)(30/30) + (1/5)(30/30) + (1/10)(30/30)
=  10/30 + 6/30 + 3/30
=  (10 + 6 + 3)/30
=  19/30

Answer is 19/30