document.write( "Question 856732: how do you slove in combination/elimination method :
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document.write( "-4x - y = -6
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document.write( "4x + 3y = 18 \n" );
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Algebra.Com's Answer #516125 by jim_thompson5910(35256)![]() ![]() ![]() You can put this solution on YOUR website! Add the equations to get\r \n" ); document.write( " \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "-4x - y = -6 \n" ); document.write( "4x + 3y = 18 \n" ); document.write( "------------- \n" ); document.write( "0x + 2y = 12\r \n" ); document.write( " \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "So, 2y = 12 ----> y = 6 (divide both sides by 2)\r \n" ); document.write( " \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "Now that we know that y = 6, we use this to find x.\r \n" ); document.write( " \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "-4x - y = -6\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "-4x - 6 = -6\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "-4x = -6+6\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "-4x = 0\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "x = 0/(-4)\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "x = 0\r \n" ); document.write( " \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "So the solutions are: x = 0, y = 6 \n" ); document.write( " |