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

 Jun 15, 2021

Best Answer 

 #1
avatar+2266 
+1

3x + y + xy = 115

(x + 1)(y + 3) - 3 = 115

(x + 1)(y + 3) = 118

 

Can you take it from here?

 

=^._.^=

 Jun 15, 2021
 #1
avatar+2266 
+1
Best Answer

3x + y + xy = 115

(x + 1)(y + 3) - 3 = 115

(x + 1)(y + 3) = 118

 

Can you take it from here?

 

=^._.^=

catmg Jun 15, 2021

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