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Algebra
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OpenStudy (mollykenney):
solving systems of 3 equations using elimination −x−5y−5z=2 4x − 5y + 4z = 19 x + 5y − z = −20 will someone please explain this to me
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OpenStudy (anonymous):
really annoyingly long you have to eliminate z from two equations so you end up with two equations and two unknowns, then solve that one
OpenStudy (anonymous):
we can work through it slowly if you like, will take a few minutes or you can just cheat if you only need the answer
OpenStudy (anonymous):
you pick
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