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OpenStudy (anonymous):
Eliminate the “z” variable in the last two equations by finding opposite coefficients and adding. What is the resulting equation? x + 3y + 2z = –16 2x – y + 2z = –15 2x – 2y – z = 1
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OpenStudy (anonymous):
Multiply last equation by 2 and add equation 2 and 3 together.
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