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Mathematics 13 Online
OpenStudy (anonymous):

Use the substitution method to solve the following system of equations. x + 2y – z = 2 3x + y – 2z = –15 3x + 4y – 3z = –2 answers:a (7, –4, –1) b. (–7, –4, 1) c.(7, –4, 1) d.(–7, 4, –1)

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