document.write( "Question 1131306: Solve this system of linear equations using the elimination method. Be sure to show all your work.\r
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document.write( "12x + 6y = 30\r
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document.write( "-2x + 7y = 51
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Algebra.Com's Answer #747940 by Boreal(15235)![]() ![]() You can put this solution on YOUR website! multiply second equation by 2 to make the xs cancel \n" ); document.write( "12x+6y=30 \n" ); document.write( "-12x+42y=306 \n" ); document.write( "48y=336 \n" ); document.write( "y=7\r \n" ); document.write( "\n" ); document.write( "substitute into first equation 12x+42=30 \n" ); document.write( "12x=-12 \n" ); document.write( "x=-1 \n" ); document.write( "check in second \n" ); document.write( "2+49=51 \n" ); document.write( "checks \n" ); document.write( "(-1, 7) \n" ); document.write( " |