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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 third equations, then the second and third equations. x - y + 2z = -2 2x + 2y + z = 7 3x + 3y - z = 3 a. 2x + 2y = 7 3x + 3y = 3 b. 2x + 2y = 7 5x + 5y = 10 c. 7x + 5y = 4 3x + 3y = 3 d. 7x + 5y = 4 5x + 5y = 10
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