Question 1169285
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*[tex \LARGE \ \ \ \ \ \ \ \ \ \  a\,+\,b\,=\,c]


So, by substitution,


*[tex \LARGE \ \ \ \ \ \ \ \ \ \  a\,+\,c\,+\,d\,=\,c]


Then


*[tex \LARGE \ \ \ \ \ \ \ \ \ \ a\,+\,d\,=\,0\ \Leftrightarrow\ a\,=\,-d]


But if *[tex \LARGE d\ \in\ \mathbb{Z}^+], then *[tex \LARGE a\ \in\ \mathbb{Z}^-]


So choose the largest negative integer.

																
John
*[tex \LARGE e^{i\pi}\ +\ 1\ =\ 0]
My calculator said it, I believe it, that settles it
*[illustration darwinfish.jpg]

From <https://www.algebra.com/cgi-bin/upload-illustration.mpl> 
I > Ø
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*[tex \LARGE \ \ \ \ \ \ \ \ \ \  
								
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