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OpenStudy (anonymous):
can someone help me.. x+ y+ z= -2 2x+4y+2z= -12 -x+6y- 3z= -36
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OpenStudy (anonymous):
x=-2 y=-4 z=5
OpenStudy (anonymous):
multiply the first equation by -2 add the new equation to the second equation getting 2y=-8 y=-4
OpenStudy (anonymous):
add the first and third equation getting 7y-2z=-38 plug y in and get z then plug in y and z into the first equation to get x
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