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The reciprocal of a number is simply 1 divide by that number. A number, multiplied by its reciprocal, is equal to one.However, in the case of fractions, you can get the reciprocal simply by exchanging top and bottom. In this case, the reciprocal of 5/4 is 4/5.

This works for proper and improper fractions; in the case of a mixed fraction, you have to convert that into an improper fraction first.

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8y ago

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