document.write( "Question 339427: If the tens digit x and the unit digit y of a positive integer n are reversed, the resulting integer 9 is more than n, what is y in terms of x?\r
\n" ); document.write( "\n" ); document.write( "(A)10-x
\n" ); document.write( "(B)9-x
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\n" ); document.write( "(E)x+1\r
\n" ); document.write( "\n" ); document.write( "The answer is E, x+1 but I am not getting it. Could you please explain.\r
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Algebra.Com's Answer #243250 by Edwin McCravy(20060) $\"\"$ $\"About$

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If the tens digit x and the unit digit y of a positive integer n are reversed, the resulting integer 9 is more than n, what is y in terms of x?
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document.write( "The given positive integer n = 10x + y\r\n" );
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document.write( "The resulting positive integer when the integers are reversed is 10y + x\r\n" );
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document.write( "(10y + x) = (10x + y) + 9\r\n" );
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document.write( "  10y + x = 10x + y + 9\r\n" );
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document.write( "Add -y - x to both sides\r\n" );
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document.write( "   9y = 9x + 9\r\n" );
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document.write( "    y = x + 1\r\n" );
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document.write( "Edwin

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