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OpenStudy (anonymous):
Solve the following system of equations. 3x + 3y + 2z = –5 x + y + 3z = –4 2x + 2y + 5z = –7 (–4, –3, 1) (–4, 3, –1) (4, –3, –1) (–4, –3, –1)
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OpenStudy (across):
Instead of solving such a large system, why don't you try plugging in some of the answers given?
OpenStudy (across):
I'm assuming it could perhaps be B, and I haven't even touched a pencil. Do you see why?
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