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OpenStudy (anonymous):
Solve the system of equations: x+y+z=4 x+3x+3z=10 2x+y-z=3
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OpenStudy (anonymous):
(x,y,z)=(1,2,1)
OpenStudy (anonymous):
How did you get this?
OpenStudy (anonymous):
label these three equations (1),(2),(3) (2)-(1) and then (1)*2-(3)
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