document.write( "Question 362661: matrix solve x-2y=-1 and 2x+y=8 \n" ); document.write( "
Algebra.Com's Answer #258467 by Fombitz(32388)\"\" \"About 
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[A]=\"%28matrix%282%2C2%2C1%2C-2%2C2%2C1%29%29\"
\n" ); document.write( "[x]=\"%28matrix%282%2C1%2Cx%2Cy%29%29\"
\n" ); document.write( "[b]=\"%28matrix%282%2C1%2C-1%2C8%29%29\"
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\n" ); document.write( "det[A]=\"5\"
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\n" ); document.write( "[A]inv=\"%281%2F5%29%2A%28matrix%282%2C2%2C1%2C2%2C-2%2C1%29%29\"
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\n" ); document.write( "[x]=\"%28matrix%282%2C1%2C3%2C2%29%29\"
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