multiply the denominator (bottom number) by the whole number and add the numerator (top number) and that number becomes your numerator. ex 73/9 = 81/9... 
It is really easy to get a mixed fraction from an improper fraction just divide the number and take the quotient as the whole number, reminder as the numerator and divisor as the denominator so if we divide 73 / 9 to mixed fraction , we will get
8 1/9 or Eight (whole number) one (numerator) by nine (denominator).
Hope it helps and pls mark as the best answer. :-)
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