The denominator of 14/15 and 13/15 is 15. The denominator of the fraction between them is 10. The LCD of all three fractions is 30 So write 14/15 as 28/30 and 13/15 as 26/30. So we can easily think of the fraction which is between 28/30 and 26/30 It is 27/30 and when we reduce that we get the answer 9/10. Edwin