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OpenStudy (anonymous):
solve the system using elimination 2x-y+z=10 4x+2y-3z=10 x-3y+2z=8
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OpenStudy (anonymous):
@tkhunny @SolomonZelman
OpenStudy (mrnood):
take the 3rd equation and rewrite it as x=????
OpenStudy (anonymous):
x=3y-2z+8
OpenStudy (tkhunny):
The x's look good to me. 4x-2y+2z=20 -4x-2y+3z=-10 -4x+12y-8z=-32 Add the second to the first. Add the third to the first. Continue in this way.
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