document.write( "Question 218457: 3x-y=11
\n" ); document.write( "2x+2y=18 \n" ); document.write( "

Algebra.Com's Answer #164545 by checkley77(12844) $\"\"$ $\"About$

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3x-y=11 MULTIPLY BY 2 & ADD.
\n" ); document.write( "2x+2y=18
\n" ); document.write( "6X-2Y=22
\n" ); document.write( "------------------
\n" ); document.write( "8X=40
\n" ); document.write( "X=40/8
\n" ); document.write( "X=5 ANS.
\n" ); document.write( "3*5-Y=11
\n" ); document.write( "15-Y=11
\n" ); document.write( "-Y=11-15
\n" ); document.write( "-Y=-4
\n" ); document.write( "Y=4 ANS.
\n" ); document.write( "PROOF:
\n" ); document.write( "2*5+2*4=18
\n" ); document.write( "10+8=18
\n" ); document.write( "18=18 \n" ); document.write( "

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