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Let x and y be integers. Show that 9x+5y is divisible by 19 if and only if x+9y is divisible by 19.

 May 29, 2020
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Let x and y be integers. Show that 9x+5y is divisible by 19 if and only if x+9y is divisible by 19.

 

 May 29, 2020

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