Steps:
1. Find the common denominator. The common denominator is 24 so, you multiply the 12 and 7 by two, 6 and 3 by 4, and 8 and 1 by 3
2. Your new numbers are 3/24, 12/24, and 14/24
3. The order of greatest to least would be 14/24, 12/24, and 3/24
4. So your answer is
7/12, 3/6, 1/8