document.write( "Question 847878: Find three consecutive positive integers such that that product of the first and third, minus the second, is 1 more than 6 times the third.
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document.write( "The smallest integer is? \n" );
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Algebra.Com's Answer #510725 by swincher4391(1107)![]() ![]() You can put this solution on YOUR website! Let the consecutive integers be known as: n, n+1, and n+2.\r \n" ); document.write( "\n" ); document.write( "We know that n(n+2) - (n+1) = 1 + 6*(n+2)\r \n" ); document.write( "\n" ); document.write( "n^2 + 2n - n - 1 = 1 + 6n + 12\r \n" ); document.write( "\n" ); document.write( "n^2 + n -1 = 6n + 13\r \n" ); document.write( "\n" ); document.write( "n^2 -5n -14 = 0\r \n" ); document.write( "\n" ); document.write( "(n-7)(n+2) = 0\r \n" ); document.write( "\n" ); document.write( "n = 7\r \n" ); document.write( "\n" ); document.write( "Then the numbers are 7, 8 ,9... 7 being the smallest. \n" ); document.write( " |