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ram
 Post subject: Re: The number of solutions ....
PostPosted: Tue Jul 28, 2009 7:01 am 
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Joined: Sun Oct 07, 2007 12:38 pm
Posts: 10
2x + y = 40 and x < = y.

So, x can take at the maximum be equal to y.

when x = y, 2x + y = 2x + x = 40.
or x = 13.33.

x and y are both positive integers. Hence, the maximum value that x can take is 13. And the minimum value that y can take is 14.

There are 13 solutions to the equation.
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