document.write( "Question 373381: The sum of a two-digit number is 11. The difference between the number and the number with its digits reversed is 27. What is the original number?\r
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document.write( "I got 74 as the original number but I can't really figure out a formula to go with this problem. \n" );
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Algebra.Com's Answer #265827 by scott8148(6628) You can put this solution on YOUR website! you have to solve for the individual digits ___ let t=tens digit and u=units digit\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "\"The sum of a two-digit number is 11\" ___ t + u = 11\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "\"The difference between the number and the number with its digits reversed is 27\" ___ 10t + u + 27 = 10u + t\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "9t + 27 = 9u ___ t + 3 = u\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "substituting ___ t + (t + 3) = 11 ___ t = 4\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "substituting ___ (4) + u = 11 ___ u = 7 \n" ); document.write( " |