Posted by Anonymous on Wednesday, December 1, 2010 at 1:47am.
"College" is not the subject of your question. It is algebra.
Did you omit some = signs in lines 2, 3 and 4? If those are three equations, together they determine the values of x, y and z. There can only be one value for P.
The last line
x 0, y 0, z 0
makes no sense; why is it there?
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