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# Properties of Rational Numbers - Reciprocal

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#### notes

let -5/7 must be multiplied by 7/-5 so as to get the product 1.
We say that 7/-5 is the reciprocal of -5/7.
We say that a rational number c/d  is called the reciprocal or multiplicative inverse of  another non-zero rational number a/b if  a/b xx c/d = 1.

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Reciprocal of Rational Number [00:06:14]
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