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OpenStudy (anonymous):
Use the elimination method to solve the following system of equations. 2x-y+z=-3 2x+2y+3z=2 3x-3y-z=-4 I got z=2 but when i try to find why i get 2/3. the choices are 3 or -3. Help?
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hero (hero):
1. Combine equations 1 and 3 5x -4y = -7 That's a good first step.
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