document.write( "Question 126515: I hope this is posted in the correct place. I need some help I do not understand how to do this. Thanks for any help you can give.
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document.write( "solve by elimination process.
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document.write( "0.3x -0.2y = 4
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document.write( "0.5x + 0.3y = 5
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document.write( "What is the solution of the system. It asks for an ordered pair. Thanks so much. \n" );
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Algebra.Com's Answer #92682 by stanbon(75887)![]() ![]() ![]() You can put this solution on YOUR website! solve by elimination process. \n" ); document.write( "0.3x -0.2y = 4 \n" ); document.write( "0.5x + 0.3y = 5 \n" ); document.write( "----------------- \n" ); document.write( "Multiply thru both equations by 10 to get rid of those decimals: \n" ); document.write( "3x - 2y = 40 \n" ); document.write( "5x + 3y = 50 \n" ); document.write( "--------------- \n" ); document.write( "Multiply the 1st quation by 3 and the 2nd equation by 2 to get: \n" ); document.write( "9x -6y = 120 \n" ); document.write( "10x+6y = 100 \n" ); document.write( "----------------- \n" ); document.write( "Add the two equations so you can solve for \"x\": \n" ); document.write( "19x = 220 \n" ); document.write( "x = 220/19 \n" ); document.write( "-------------- \n" ); document.write( "Substitute to solve for Y: \n" ); document.write( "3(220/19) -2y = 40 \n" ); document.write( "Multiply thru by 19 to get: \n" ); document.write( "660 -38y = 760 \n" ); document.write( "38y = -100 \n" ); document.write( "y = -50/19 \n" ); document.write( "================ \n" ); document.write( "Ordered pair solution: (220/19 , -50/19) \n" ); document.write( "Cheers, \n" ); document.write( "Stan H. \n" ); document.write( " \n" ); document.write( " |