document.write( "Question 34476: Solve by substitution:\r
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document.write( "x+y=12
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document.write( "y=3x \n" );
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Algebra.Com's Answer #20778 by Prithwis(166)![]() ![]() ![]() You can put this solution on YOUR website! x+y=12 \n" ); document.write( "y=3x\r \n" ); document.write( "\n" ); document.write( "x+3x=12 \n" ); document.write( "4x=12 \n" ); document.write( "x=3\r \n" ); document.write( "\n" ); document.write( "3+y=12 \n" ); document.write( "y=9\r \n" ); document.write( "\n" ); document.write( "(x,y) = (3,9) \n" ); document.write( " \n" ); document.write( " |