12/21 = 4/7
NOTE : The original fraction can be simplified as both the denominator and numerator are divisible by 3. That is, 3 is a common factor of 12 and 21.
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It is 6/61.
Put 54 over 100 and reduce it into its simplest form.
15/4 is already in its simplest form.
Since the numerator of the fraction is 1, the proper fraction 1/52 is already expressed in its simplest form.
333 over 900 in simplest form as a fraction is 37/100