Question 540927
i have tried this problem four times and i keep getting the same ordered triple (2,-5,3). But when i substitute the answer in it does not work. 
1) x + 2y + 2z = -2
2) 2x - y + 3z = -6
3) x - 3y + 2z = -7 
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x = 2
y = 1
z = -3
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Cheers,
Stan H.
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