2/10 or 1/5
Since they already have the same denominators, just subtract the numerators. Then, you can simplify the 2/10 to 1/5 by dividing two from both the numerator and the denominator.
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16 10/11 - 9 = 7 10/11
(7/9) / (9/10) = (7/9) * (9/10) = 7/10 = 0.7
7/9 divided by 9/10 can be restated as, 7/9 * 10/9 = 70/81 ---------- the simplest form
9/10 - 7/10 = 2/10 = 1/5
It is: 9 and 7/10 = 9.7