document.write( "Question 1050204: 12x+6y+7z=-35
\n" ); document.write( "7x-5y-6z=200
\n" ); document.write( "x+y=-10
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Algebra.Com's Answer #665878 by Fombitz(32388)\"\" \"About 
You can put this solution on YOUR website!
Use Cramer's rule,
\n" ); document.write( "\"A=%28matrix%283%2C3%2C%0D%0A12%2C6%2C7%2C%0D%0A7%2C-5%2C-6%2C%0D%0A1%2C1%2C0%29%29\"
\n" ); document.write( "\"abs%28A%29=120\"
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\n" ); document.write( "\"abs%28A%5Bx%5D%29=1200\"
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\n" ); document.write( "\"abs%28A%5By%5D%29=-2400\"
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\n" ); document.write( "\"abs%28A%5Bz%5D%29=-600\"
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\n" ); document.write( "SO then,
\n" ); document.write( "\"x=abs%28A%5Bx%5D%29%2Fabs%28A%29=1200%2F120=10\"
\n" ); document.write( "\"y=abs%28A%5By%5D%29%2Fabs%28A%29=-2400%2F120=-20\"
\n" ); document.write( "\"z=abs%28A%5Bz%5D%29%2Fabs%28A%29=-600%2F120=-5\"
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