Question 484416
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*[tex \LARGE \ \ \ \ \ \ \ \ \ \ -x\ +\ 2y\ =\ 9]


Add *[tex \Large -2y] to both sides:


*[tex \LARGE \ \ \ \ \ \ \ \ \ \ -x\ =\ -2y\ +\ 9]


Multiply both sides by -1:


*[tex \LARGE \ \ \ \ \ \ \ \ \ \ x\ =\ 2y\ -\ 9]


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