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OpenStudy (anonymous):
How do we solve 6x+4y+z=20 ?? to get the values of x,y and z? there is no other equation provided...
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OpenStudy (marissalovescats):
Do you have answer choices?
OpenStudy (anonymous):
@Hero
OpenStudy (marissalovescats):
I believe you just use substitution (I call it the cover up method) Plug in zero for the variables you don't need to find.
OpenStudy (marissalovescats):
So if we want to know y, we would say |dw:1373485482632:dw| See how that works?
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