7/6 is an improper fraction. Improper fractions can't be proper fractions. It wouldn't be proper.
3 over four is all ways proper and 6 over four like that is improper but if you mean 64 over 4 it is also improper just the way it is
6 and a 1/2 as an improper fraction is 13/2
7 over 6 (You should know).
As mixed number the improper fraction of 23/6 is 3 and 5/6
4/6 is a proper fraction. Proper fractions can't become improper fractions.
9 1/6 Multiply 6 x 9 and add the 1 to get 55. The improper fraction is 55/6.
17- The Humbug
6 over 1
3 and 1/6 = 19/6
11 over 6 1 + 5/6 = 11/6
1 1/6