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If x and y are positive integers for which 3x + y + xy = 115, then what is x + y?

 Aug 3, 2022
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3x  + y  +  xy   = 115

 

y =  (115 - 3x)   / ( 1 + x)

 

When x = 1   y =  56

 

So

 

x + y =  57

 

cool cool cool

 Aug 3, 2022

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