document.write( "Question 956774: The sum of five times a number and twice a second number is 18, but the difference of three times the first number and seven times the second number is -22. Find the two numbers using the elimination method.
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Algebra.Com's Answer #584539 by stanbon(75887)![]() ![]() ![]() You can put this solution on YOUR website! The sum of five times a number and twice a second number is 18, but the difference of three times the first number and seven times the second number is -22. Find the two numbers using the elimination method. \n" ); document.write( "-------------------- \n" ); document.write( "Equations: \n" ); document.write( "5x + 2y = 18 \n" ); document.write( "3x - 7y = -22 \n" ); document.write( "---------- \n" ); document.write( "Modify for elimination:: \n" ); document.write( "15x + 6y = 3*18 \n" ); document.write( "15x - 35y= 5*-22 \n" ); document.write( "---------------- \n" ); document.write( "Subtract and solve for \"y\":: \n" ); document.write( "41y = 164 \n" ); document.write( "y = 4 \n" ); document.write( "------ \n" ); document.write( "Solve for \"x\":: \n" ); document.write( "3x - 7y = -22 \n" ); document.write( "3x - 28 = -22 \n" ); document.write( "3x = 6 \n" ); document.write( "x = 2 \n" ); document.write( "------------ \n" ); document.write( "Cheers, \n" ); document.write( "Stan H. \n" ); document.write( "---------------\r \n" ); document.write( "\n" ); document.write( " \n" ); document.write( " |