document.write( "Question 205928: Pls. help me regarding this example. I'll be taking a test of these soon. I just want to know how this is solved, I'm having trouble with the reversed word. Thanks.\r
\n" ); document.write( "\n" ); document.write( "The sum of the digit of a two no. is 9. If the digits are reversed, the numbers is increased by 27. Find the original no. \n" ); document.write( "
Algebra.Com's Answer #155509 by Alan3354(69443)\"\" \"About 
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The sum of the digit of a two no. is 9. If the digits are reversed, the numbers is increased by 27. Find the original no.
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\n" ); document.write( "It's confusing, because we don't think of a 2 digit # as 10 x the left digit plus the right digit.
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\n" ); document.write( "A 2 digit number is xy.
\n" ); document.write( "x+y = 9
\n" ); document.write( "The value of xy is 10x + y.
\n" ); document.write( "Reversed, 10y + x = 10x + y + 27
\n" ); document.write( "-9x + 9y = 27
\n" ); document.write( "-x + y = 3
\n" ); document.write( "x + y = 9
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\n" ); document.write( "2y = 12
\n" ); document.write( "y = 6
\n" ); document.write( "x = 3
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\n" ); document.write( "Check:
\n" ); document.write( "36 = 63 - 27, so it's correct. \n" ); document.write( "
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