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If the GCF of the numerator and denominator is 1, the fraction is in its simplest form as is the case here.
4 and 5 have no common factors other than 1. 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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11y ago

4/5 can be wrote as 2 4/5 but can't be simplified since 5 can't go evenly into 14

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11y ago

Because 5 is a Prime number so it cant divide into anything. eight can only divide into 4 and 2 and five isn't divisible by those numbers.

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11y ago

no because you can still reduce so it would be 1 over 2. :)

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13y ago

2 over 15

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Q: How do you know 5 over 8 is in simplest form?
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