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OpenStudy (anonymous):
Solve each system of equations. 2x - y = 2 3z = 21 4x + z = 19
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OpenStudy (jdoe0001):
if you solve the middle equation for "z" what would that give you?
OpenStudy (anonymous):
first you solve 2th equetion and find "z" so find "x" in last equetion. finaly find "y".
OpenStudy (jdoe0001):
and so, what did you get?
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