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Let $y = 0.(\overline{123}) + (\overline{345})$. When y is written out as a repeating decimal, what is the sum of the digits in a single repeating period? (In other words, what is the sum of the digits covered by the repeat bar?)

 Oct 6, 2021
 #1
avatar+114812 
+1

Did you forget 0. ?  and what are the brackets for?

 Oct 6, 2021
 #2
avatar+114812 
+1

 

\(0.\overline{123}+\\ 0.\overline{345}\\~\\ 0.\overline{468} \)

 

 

4+6+8=?

 Oct 6, 2021

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