David W. answered 12/28/15
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9 10/9 is a mixed number that has the whole number 9 added to the improper fraction 10/9. 10/9 is improper because the numerator is larger than the denominator. It can be reduced to 1 1/9. That means that 9 10/9 is equal to 9 + 1 1/9 = 10 1/9. Now, it is a whole number added to a proper fraction (and is still a mixed number).
Andrew M.
12/29/15