document.write( "Question 169492: Solve each system by addition:\r
\n" ); document.write( "\n" ); document.write( "2x=2-y
\n" ); document.write( "3x+y=-1
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Algebra.Com's Answer #124942 by checkley77(12844)\"\" \"About 
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2x=2-y
\n" ); document.write( "2x+y=2
\n" ); document.write( "-(3x+y=-1) subtract this equation from the other equation.
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\n" ); document.write( "-x=3
\n" ); document.write( "x=-3 ans.
\n" ); document.write( "2*-3=2-y
\n" ); document.write( "-6=2-y
\n" ); document.write( "y=2+6
\n" ); document.write( "y=8 ans.
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