Question 1023398
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None of them are correct.  If you multiply the first term of one of the equations by -1, then you have to multiply ALL of the terms by -1.  So in every case *[tex \Large 7x\ +\ 3y\ +\ 4z\ =\ 29\ \right\  \left(-\right) 7x\ +\ 3y\ +\ 4z\ =\ 29] is not correct. 


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

*[tex \Large \ \
*[tex \LARGE \ \ \ \ \ \ \ \ \ \  

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