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Mathematics 16 Online
OpenStudy (anonymous):

If you were to use the elimination method to solve the following system, choose the new system of equations that would result after the variable z is eliminated in the first and second equations, then the second and third equations. 3x - 7y - z = -14 3x + 3y + 2z = 1 2x + 5y - 2z = -16

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