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# Why is it useful to know what a reciprocal is in math?

Updated: 4/28/2022

Wiki User

13y ago

A reciprocal is useful to know in math because to divide fractions, you must multiply by the second fraction's reciprocal. For example:

2/3 divided by 4/7

is the same as

2/3 times 7/4.

Wiki User

13y ago

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Q: Why is it useful to know what a reciprocal is in math?
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