document.write( "Question 384231: a two-didgit number is 11 times it's unit digits. the sum of the digits is 12. find that number \n" ); document.write( "
Algebra.Com's Answer #271994 by richard1234(7193)\"\" \"About 
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We have the system of equations\r
\n" ); document.write( "\n" ); document.write( "10a + b = 11b\r
\n" ); document.write( "\n" ); document.write( "a + b = 12\r
\n" ); document.write( "\n" ); document.write( "From the first equation we obtain 10a = 10b --> a = b. By substituting into the second equation we immediately get a = b = 6, so the number is 66.
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