There are a couple possibilities here, I'll give you both
5 - 6/7 = 35/7 - 6/7 = 29/7
(5-6)/7 = -1/7
6/7 - 5/7 = 1/7
35/42 - 12/42 = 23/42
three and five sixths
1/6
2 over 63
3 over 7
6/7 - 5/7 = 1/7
35/42 - 12/42 = 23/42
three and five sixths
1/6
1/9
3/6, or 1/2
2 over 63
i think 42 hundredths
Six eighths, or three fourths.
9.6 - 5.7 = 3.9
Six and one fourth minus three and five eighths is two and seven eighths.