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Mathematics 19 Online
OpenStudy (anonymous):

Solve the following system of equations. x + 4y + z = –10 3x – 3y + 6z = –21 x + 2y + 2z = –10 Answer (2, –2, –4) (–4, –1, –2) (–3, –2, –3) (1, –2, –3)

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