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fill in the ? 1=1.9:?

 Aug 28, 2014

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 #2
avatar+118723 
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$$1:1.9\;\rightarrow 10:19$$

.
 Aug 30, 2014
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1.9.............

 Aug 28, 2014
 #2
avatar+118723 
+5
Best Answer

$$1:1.9\;\rightarrow 10:19$$

Melody Aug 30, 2014

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