-1/3 - 2/3 = -3/3 = -1
-5/6 - 1/3 = -10/6 - 2/6 = -12/6 = -2
-6 1/2 - 3 5/7 = -13/2 - 26/7 = -91/14 - 52/14 = -143/14 = -10 3/14
-1/8 - 3/4 = -1/8 - 6/8 = -7/8
-1/3 - 2/3 = -3/3 = -1
-5/6 - 1/3 = -10/6 - 2/6 = -12/6 = -2
-6 1/2 - 3 5/7 = -13/2 - 26/7 = -91/14 - 52/14 = -143/14 = -10 3/14
-1/8 - 3/4 = -1/8 - 6/8 = -7/8