For question 14, 2 1/4 is equal to 9/4. When dividing by the fraction, it is the same as mutiplying by the reciprocal. So you multiply across and get 40/9 which is simplified to 3 1/9
For question 17. 8 is equal to 8/1. 2 2/3 is equal to 8/3. Multiply 2 2/3 by the reciprocal of 8/3. (which is 3/8) you get 8/24 which is equal to 1/3.
