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Mathematics 18 Online
OpenStudy (anonymous):

{PLEASE HELP!!! what is the soulution to the system of equations below

OpenStudy (anonymous):

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OpenStudy (anonymous):

PLEASE HELP ME

OpenStudy (unklerhaukus):

the first two equations x+y+z =-1 x-y+z =-1 the difference is (x+y+z) - (x-y+z) = (-1)-(-1) y-(-y) = -1-(-1) 2y = 0 so y = 0

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