document.write( "Question 314696: The sum of the two digits of a number is 16. The number formed be reversing the digits is 18 more than the original number. Determine the original number.\r
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document.write( "Let t= the tens digit, u= the units digit, and u+t=16. What equation would complete the system? \n" );
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Algebra.Com's Answer #225099 by mananth(16946) You can put this solution on YOUR website! 1....t+u=16 \n" ); document.write( ". \n" ); document.write( "the number is 10t+u \n" ); document.write( "if this is reversed it becomes 10u+t \n" ); document.write( "this is 18 more than the original number \n" ); document.write( ".. \n" ); document.write( "10u+t = 10t+u+18 \n" ); document.write( "9u-9t=18 \n" ); document.write( "2....u-t=2\r \n" ); document.write( "\n" ); document.write( "Add equation1 & 2\r \n" ); document.write( "\n" ); document.write( "t+u+u-t=16+2 \n" ); document.write( "2u=18 \n" ); document.write( "u=9 \n" ); document.write( "so t= 7 \n" ); document.write( "The number = 97 \n" ); document.write( " |