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**Amctest123****Member**- Registered: 2017-10-20
- Posts: 1

What's the biggest value of N where N is not a solution?

x and y is non negative integers

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**bob bundy****Administrator**- Registered: 2010-06-20
- Posts: 8,386

Hi Amctest 123

Welcome to the forum.

There is an entire "family" of straight lines where 7x+ 11y = something.

They are all parallel and as N gets bigger the lines move away from the origin. Joining (11,0) to (0,7) will produce one. What is N for this case?

That should give you a starting point.

Bob

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