It is 12/35 in its simplest form
14/20 minus 3/5 is 1/10
(10/21)/(5/14) = 1.3- That minus is a bar.
14/20 - 3/5 = 7/10 - 6/10 = 1/10
43/10 - 29/10 = 43/10 - 29/10 = 14/10 = 14/10 = 12/5
14/20 - 3/5 = 14/20 - 12/20 = 2/20 = 1/10
39/10 - 12/5 = 39/10 - 7/5 = 39/10 - 14/10 = 25/10 = 5/2 = 21/2
5/7 - 7/14 becomes: 10/14 - 7/14. Then subtract across to get the final answer: 3/14. 5/7 became 10/14 by finding the lowest common denominator which is 14. Then you figure 7 goes into 14 two times, and 2x5 = 10 therefore 5/7 becomes 10/14.
2/5 = 4/10 minus 1/10 is 3/10
9/10 minus 3/5 is 3/10
2/10 which is 1/5
1 - 1 = 0
0.8