document.write( "Question 32780: The question is: Use Elimination to solve:
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document.write( "7x-4y=29
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document.write( "3x+5y=-1 \n" );
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Algebra.Com's Answer #19243 by stanbon(75887)![]() ![]() ![]() You can put this solution on YOUR website! You can choose to eliminate the x's or the y's. \n" ); document.write( "Let's say you want to eliminate the y's. \n" ); document.write( "Multiply the 1st equation by 5 to get: \n" ); document.write( "1) 35x-20y=145 \n" ); document.write( "Multiply the 2nd equation by 4 to get: \n" ); document.write( "2) 12x+20y=-4 \n" ); document.write( "Now, subtract 2) from 1) to get: \n" ); document.write( "23x+0y=149 \n" ); document.write( "Now you can solve this for \"x\" \n" ); document.write( "Then substitute the value you get for \"x\" \n" ); document.write( "into one of the original equations to solve \n" ); document.write( "for \"y\". \n" ); document.write( "Hope this helps. \n" ); document.write( "Cheers, \n" ); document.write( "Stan H. \n" ); document.write( " |