document.write( "Question 505266: The sum of the reciprocals of two consecutive even integers a and b is
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document.write( "7 over 24
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document.write( "Find the integers. \n" );
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Algebra.Com's Answer #339858 by htmentor(1343)![]() ![]() You can put this solution on YOUR website! The sum of the reciprocals of two consecutive even integers a and b is \n" ); document.write( "7 over 24 \n" ); document.write( ". \n" ); document.write( "Find the integers. \n" ); document.write( "============================== \n" ); document.write( "If they are consecutive even integers, and a is the smallest, then b = a + 2 \n" ); document.write( "The sum of the reciprocals = 7/24: \n" ); document.write( "1/a + 1/(a+2) = 7/24 \n" ); document.write( "((a+2) + a)/(a(a+2)) = 7/24 \n" ); document.write( "(2a+2)/(a^2+2a) = 7/24 \n" ); document.write( "7a^2 - 34a - 48 = 0 [cross multiply and simplify] \n" ); document.write( "This can be factored: \n" ); document.write( "(7a+8)(a-6) = 0 \n" ); document.write( "Since the number is an integer, a = 6 \n" ); document.write( "So the other integer = 8 \n" ); document.write( "Ans: 6,8 \n" ); document.write( "Check: \n" ); document.write( "1/6 + 1/8 = (3 + 4)/24 = 7/24 \n" ); document.write( " |