document.write( "Question 919516: a 2 digit number is 3 times the sum of its digits. The number is also less 45 less than the number formed by reversing the digits original number. What is the original number? \n" ); document.write( "
Algebra.Com's Answer #557783 by Edwin McCravy(20060)\"\" \"About 
You can put this solution on YOUR website!
Let the tens digit be t and the units digit be u.  Then the number\r\n" );
document.write( "is 10t+u.
a 2 digit number 
10t+u
is
equals
3 times the sum of its digits.
 3(t+u)\r\n" );
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document.write( "So that says\r\n" );
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document.write( "10t+u = 3(t+u)\r\n" );
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document.write( "10t+u = 3t+3u\r\n" );
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document.write( "   7t = 2u\r\n" );
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document.write( "   \"t%2Fu=2%2F7\"\r\n" );
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document.write( "So the only way that can be is t=2 and u=7

\n" ); document.write( "The number is also less 45 less than the number formed by reversing the digits original number.
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document.write( "Let's see.  If we reverse 27 we get 72 and 72-27 = 45, so yes that is true of 27.
What is the original number?
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27\r\n" );
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document.write( "Edwin
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