Oneand one sixth is six sixths (one in total) plus one sixth - or seven sixths. So seven sixths minus 5 sixths is 2 sixths which can also be expressed as one third.
1
1/2
Negative one half
Five and one third.
three and five sixths
1/2
1 and one half
7/18 minus 5/6 is -4/9
5/6 minus 7/12 is 1/4.
2 minus five sixths is 1 1/6.
2