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Mathematics 21 Online
OpenStudy (anonymous):

Use the substitution method to solve the following system of equations. 4x – y – 3z = –3 x – 2y – 2z = –3 x + y + 3z = –2 Answer (–1, –2, 1) (1, –2, –1) (–1, 2, –1) (1, –2, 1)

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