Convert them to have the same denominator.
11*10= 110.
Use that number.
7/11= 70/110 7/10= 77/110
As you can see, you actually have pretty good options.
I chose 75/110, so you could simplify it.
15/22
There is a number in between 7/11 and 7/10.
I hope this helps!
~cupcake