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20-06-2018
Mathematics

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x+3y-z=2
x+y-z=0
3x+2y-3z=-1

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elenasegovia99 elenasegovia99

20-06-2018

Add the equations in order to solve for the first variable. Plug these values to solve for the other variables:
X=x
Y=1
x=z-1

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