Question 155757
3 5/12 - 1 7/12 =

3 5/12 = 3 x 12 + 5 = 41 or 41/12
1 7/12 = 1 x 12 + 7 = 19 or 19/12 

41/12 - 19/12 = 22/12

22/12 divided by 2/2 = 11/6 

11 divided by 6 = 1 R5 which equals 1 5/6


Answer = 1 5/6 

Hope this helps.
-MusicalK10