document.write( "Question 144372: Solve this system of equations\r\n" );
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document.write( "18x - 7y = 121\r\n" );
document.write( " 6x - 14y = 122
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Algebra.Com's Answer #105110 by Alan3354(69443)![]() ![]() You can put this solution on YOUR website! 18x-7y=121 \n" ); document.write( "6x-14y=122 \n" ); document.write( "Eliminate one variable. To do this multiply or divide one equation to make the coefficients of one of the variables the same as in the other eqn. Divide ean 2 by 2.\r \n" ); document.write( "\n" ); document.write( "18x-7y=121 \n" ); document.write( "3x-7y=61\r \n" ); document.write( "\n" ); document.write( "Subtract eqn 2 from eqn 1.\r \n" ); document.write( "\n" ); document.write( "18x-7y=121 \n" ); document.write( "3x -7y=61\r \n" ); document.write( "\n" ); document.write( "15x =60 \n" ); document.write( "x = 4\r \n" ); document.write( "\n" ); document.write( "Substitute x in any eqn, and get y = -7 \n" ); document.write( " |