document.write( "Question 211290: -4x-15=57
\n" ); document.write( "5x+2y=11\r
\n" ); document.write( "\n" ); document.write( "How do you solve systems equations?
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Algebra.Com's Answer #159649 by Alan3354(69443)\"\" \"About 
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-4x-15=57
\n" ); document.write( "-4x = 72
\n" ); document.write( "x = -18
\n" ); document.write( "--------
\n" ); document.write( "5x+2y=11
\n" ); document.write( "5*(-18) + 2y = 11
\n" ); document.write( "-90 + 2y = 11
\n" ); document.write( "2y = 101
\n" ); document.write( "y = 101/2
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