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OpenStudy (anonymous):
Systems with 3 variables Help on how to find the answers for each letter.. 2y-3z=0 x-3y=-4 3x+4y=3
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OpenStudy (anonymous):
when there's 3 variables, just use matrices.
OpenStudy (anonymous):
when there's 3 variables, just use substitution
OpenStudy (anonymous):
I agree with substitution
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