document.write( "Question 6842: Im having a problem with the system of equations....for example x+y=11
\n" ); document.write( " y=-3x
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Algebra.Com's Answer #3752 by prabhjyot(165)\"\" \"About 
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x+y=11 --->(1)
\n" ); document.write( "y=-3x --->(2)
\n" ); document.write( "Substituting equation (2) in equation (1) we get\r
\n" ); document.write( "\n" ); document.write( "x + (-3x) =11
\n" ); document.write( "x -3x =11
\n" ); document.write( "-2x =11
\n" ); document.write( "x = -11/2\r
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