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If either the numerator or denominator is prime, you need to check that the other is not divisible by that prime. If it is then the prime is a common factor and the fraction simplifies either to a unit factor or an integer. Otherwise, there is no simplification possible.


For example, consider the prime 7.


7/21 = 1/3 is a unit fraction.

63/7 = 9 is an integer.


22/7 and 7/22 cannot be simplified.

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12y ago

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If the GCF of the numerator and the denominator is 1, the fraction is in its simplest form.

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7y ago
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Q: How do you make a fraction in simplest form when it prime?
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