Put 11 / 12, 17 / 18 and 6 / 5 in descending order

Put 11 / 12, 17 / 18 and 6 / 5 in descending order

6/5>1
1-11 / 12 = 1 / 12, 1-17 / 18 = 1 / 18, 1 / 12 > 1 / 18, so 17 / 18 > 11 / 12
So: 6 / 5 > 17 / 18 > 11 / 12