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Mathematics 16 Online
OpenStudy (anonymous):

Solve the system of equations x+y-z=-1 x+y+z=3 3x-2y-z=-4

OpenStudy (anonymous):

do you know how to start? Hint: use addition on the first two.

OpenStudy (anonymous):

I tried elimination with it, but couldn't get it to work

OpenStudy (anonymous):

never mind, i didn't understand it because of a mistake in me reading my own writing, I got it now :p

OpenStudy (anonymous):

Love khan academy! @phi

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