document.write( "Question 135485: 2x+y=1
\n" ); document.write( "x-y=11 \n" ); document.write( "
Algebra.Com's Answer #99295 by checkley77(12844)\"\" \"About 
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2X+Y=1
\n" ); document.write( "Y=1-2X
\n" ); document.write( "X-(1-2X)=11
\n" ); document.write( "X-1+2X=11
\n" ); document.write( "3X=11+1
\n" ); document.write( "3X=12
\n" ); document.write( "X=12/3
\n" ); document.write( "X=4 ANSWER.
\n" ); document.write( "Y=1-2*4
\n" ); document.write( "Y=1-8
\n" ); document.write( "Y=-7 ANSWER.
\n" ); document.write( "PROOF
\n" ); document.write( "4-(-7)=11
\n" ); document.write( "4+7=11
\n" ); document.write( "11=11
\n" ); document.write( " \n" ); document.write( "
\n" );