document.write( "Question 741771: For the following system, if you isolated x in the first equation to use the Substitution Method, what expression would you substitute into the second equation?\r
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document.write( "−x + 2y = 9
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document.write( "4x + 5y = 9 \n" );
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Algebra.Com's Answer #852626 by ikleyn(53419) You can put this solution on YOUR website! . \n" ); document.write( "For the following system, if you isolated x in the first equation to use the Substitution Method, \n" ); document.write( "what expression would you substitute into the second equation?\r \n" ); document.write( "\n" ); document.write( "-x + 2y = 9 \n" ); document.write( "4x + 5y = 9 \n" ); document.write( "~~~~~~~~~~~~~~~~~~~~~~~~\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( " \r\n" ); document.write( "I isolate 'x' in the first equation by moving 'x' to the right side (with changing its sign)\r\n" ); document.write( "and moving '9' to the left side (with changing its sign)\r\n" ); document.write( "\r\n" ); document.write( " 2y - 9 = x.\r\n" ); document.write( "\r\n" ); document.write( "\r\n" ); document.write( "Then precisely this expression I will substitute into the second equation, replacing 'x' there\r\n" ); document.write( "with 2y-9.\r\n" ); document.write( "\r \n" ); document.write( "\n" ); document.write( "Thus I answered your question.\r \n" ); document.write( " \n" ); document.write( " \n" ); document.write( "\n" ); document.write( " \n" ); document.write( " |