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OpenStudy (anonymous):
What is the solution to the system? x+y-z=1 x+2z=0 2x+2y=4
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OpenStudy (sdfgsdfgs):
Multiply the 1st eqn by 2 on left n right, u will get 2x + 2y - 2z = 2 Now substract that from the 3rd eqn, what will u get?
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