document.write( "Question 242967: The denominator of a fraction is one less than twice the numerator. If seven is added to both the numerator and the denominator, the resulting fraction has a value of seven-tenths. Find the original fraction.\r
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Algebra.Com's Answer #177995 by stanbon(75887)![]() ![]() ![]() You can put this solution on YOUR website! The denominator of a fraction is one less than twice the numerator. If seven is added to both the numerator and the denominator, the resulting fraction has a value of seven-tenths. Find the original fraction. \n" ); document.write( "------------------- \n" ); document.write( "Let the numerator be \"x\". \n" ); document.write( "The the denominator is \"2x-1\". \n" ); document.write( "------------------------------------ \n" ); document.write( "Equation: \n" ); document.write( "(x+7/(2x-1+7) = 7/10 \n" ); document.write( "Cross multiply to get: \n" ); document.write( "10(x+7) = 7(2x+6) \n" ); document.write( "10x + 70 = 14x+42 \n" ); document.write( "4x = 28 \n" ); document.write( "x = 7 \n" ); document.write( "2x-1 = 13 \n" ); document.write( "--------------------- \n" ); document.write( "The original fraction is 7/13 \n" ); document.write( "=================================== \n" ); document.write( "Cheers, \n" ); document.write( "Stan H. \n" ); document.write( " |