document.write( "Question 318720: x-y=2
\n" ); document.write( "x+y=6
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Algebra.Com's Answer #228149 by cygnewhite8(4)\"\" \"About 
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a: x-y=2
\n" ); document.write( "b: x+y=6 \r
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\n" ); document.write( "\n" ); document.write( "a-b(to eliminate x): -2y=-4
\n" ); document.write( " y=2\r
\n" ); document.write( "\n" ); document.write( "substitute y=2 in a: x-2= 2
\n" ); document.write( " x=2+2=4
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\n" ); document.write( "so, y=2, x=4
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