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How is -5 and 1/5 multiplicative inverses

 Sep 13, 2016

Best Answer 

 #2
avatar+21917 
+5

-5  and  1/5  aren't multiplicative inverses (because their product is  -1  not  1):  

5  and  1/5  are multiplicative inverses (because their product is  1):  

-5  and  -1/5  are multiplicative inverses (because their product is  1).

 Sep 13, 2016
 #1
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+5

How is -5 and 1/5 multiplicative inverses.

 

multiplicative inverse =reciprocal. When you say "how", you mean "what is the reciprocal of -5 and 1/5??". If yes, the reciprocal of -5 =1/-5 =-1/5. And the reciprocal of 1/5 =5/1 =5.

 Sep 13, 2016
 #2
avatar+21917 
+5
Best Answer

-5  and  1/5  aren't multiplicative inverses (because their product is  -1  not  1):  

5  and  1/5  are multiplicative inverses (because their product is  1):  

-5  and  -1/5  are multiplicative inverses (because their product is  1).

geno3141 Sep 13, 2016

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