document.write( "Question 1091559: 2x+y-z=20
\n" ); document.write( "X+3y=13
\n" ); document.write( "X=3
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Algebra.Com's Answer #705973 by josgarithmetic(39630)\"\" \"About 
You can put this solution on YOUR website!
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\n" ); document.write( "2x+y-z=20
\n" ); document.write( "x+3y=13
\n" ); document.write( "x=3
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\n" ); document.write( "6+y-z=20
\n" ); document.write( "3+3y=13
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\n" ); document.write( "y-z=14
\n" ); document.write( "3y=10
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\n" ); document.write( "How about now?
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