document.write( "Question 483997: \"Solve each system by substitution.\"
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document.write( "y=-4x+16
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document.write( "y=2x+4\r
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document.write( "I changed y=-4x+16 to -4x+y=16 then I put the bottom equation (y=2x+4) into that so:
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document.write( "-4x+(2x+4)=16 and got x=-6 so I put that into y=2x+4 so y=2(6)+4 and got y=16 but I don't think it's right. (-6,16) \n" );
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Algebra.Com's Answer #331198 by jim_thompson5910(35256)![]() ![]() ![]() You can put this solution on YOUR website! y=-4x+16\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "2x+4 =-4x+16\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "2x+4x =16-4\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "6x =12\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "x=12/6\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "x=2\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "------------\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "y=2x+4\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "y=2(2)+4\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "y=4+4\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "y=8\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "So x = 2 and y = 8 giving us the ordered pair (2,8) \n" ); document.write( " |