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OpenStudy (anonymous):
solve using elementary operations: x+y+z=0 x-y=0 y-z=-5
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OpenStudy (anonymous):
Elementary operations meaning substitution? Addition? Subtraction?
OpenStudy (anonymous):
yes, kinda.. i need it to solve this system of equATion
OpenStudy (anonymous):
I would start by solving the last equation for z and substitute into the first equation.
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