Consider any number a/b. The reciprocal of a/b is the number when multiplied by a/b is equal to 1, namely, b/a.
Yes.
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1/4 + 1/5 = 9/20
the reciprocal is a factor by which you multiply a given number so that their product is 1. ex. 3/5 is the reciprocal of of 5/3.
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How to Find Reciprocals
Reciprocal Rule f(x)=1/((x+1/x)^2)
Reciprocal Rule f(x)=1/(2x+1)
Mary Evelyn Tucker Talks About Reciprocity and Restraint