document.write( "Question 441006: the sume of the digits in a two-digit number is 7. The new number obtained when the digits are reversed is 27 less than the original number. Find the original number. \n" ); document.write( "
Algebra.Com's Answer #304501 by stanbon(75887)\"\" \"About 
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the sum of the digits in a two-digit number is 7. The new number obtained when the digits are reversed is 27 less than the original number. Find the original number.
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\n" ); document.write( "original number: 10t+u
\n" ); document.write( "reversed number: 10u+t
\n" ); document.write( "--------
\n" ); document.write( "Equation:
\n" ); document.write( "t + u = 7
\n" ); document.write( "10t+u -(10u+t) = 27
\n" ); document.write( "------------------------------
\n" ); document.write( "Rearrange:
\n" ); document.write( "t + u = 7
\n" ); document.write( "9t-9u = 27
\n" ); document.write( "------------------------------
\n" ); document.write( "Rearrange:
\n" ); document.write( "t + u = 7
\n" ); document.write( "t - u = 3
\n" ); document.write( "-------------------
\n" ); document.write( "Add and solve for \"t:
\n" ); document.write( "2t = 10
\n" ); document.write( "t = 5
\n" ); document.write( "----
\n" ); document.write( "u = 2
\n" ); document.write( "-------
\n" ); document.write( "Original number:
\n" ); document.write( "10t+u = 52
\n" ); document.write( "========================Cheers,
\n" ); document.write( "Stan H. \n" ); document.write( "
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