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
\n" ); document.write( "\n" ); document.write( "Let t= the tens digit, u= the units digit, and u+t=16. What equation would complete the system?
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Algebra.Com's Answer #225099 by mananth(16946)\"\" \"About 
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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
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