If you have 4 1/3, for example, you multiply the number in front (4, the whole number) by the number on the bottom (3, the denominator) so you have 4 X 3 = 12. Then, add that to the number on top (1, the numerator) 12+1= 13. The denominator stays the same. In this case it is 3 (from 4 1/3). 4 1/3 expressed as an improper fraction is 13/3.
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Seven fifths as a mixed number is 12/5. As an improper fraction: 7/5
You could write a fraction as a proper, improper or mixed fraction.
As a mixed number it is: 5 and 3/10 As an improper fraction it is: 53/10
As a mixed number it is 9 3/5. As an improper fraction it is 48/5
It is simply 356/1 as an improper fraction