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OpenStudy (anonymous):
4x-y-3z=-3 x-2y-2z=-3 x+y+3z=-2 a. -1 2 -1 b. 1 -2 1 c. -1 -2 1 d.1 -2 -1
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jhonyy9 (jhonyy9):
those solutions from a. are corrects
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