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OpenStudy (anonymous):
Systems of equations ! 2x+y=-4 -2y+4z=0 3x-2z=-11
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OpenStudy (kropot72):
You can find y in terms of x from the first equation. Then substitute for y in the second equation. Then you are left with two equations and only two unknowns.
OpenStudy (anonymous):
\[\{x=-3,y=2,z=1\} \]
OpenStudy (anonymous):
Follow the advice of @kropot72.
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