document.write( "Question 568218: Explain how to answer this by elimination using multiplication please:
\n" ); document.write( "The sum of the digits of a two digit number is 11. If the digits are reversed, the new number is 45 more than the original number. Find the number and show your work.
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Algebra.Com's Answer #366867 by issacodegard(60)\"\" \"About 
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Let the number be N and let its digits be x (tens) and y (ones). Then,
\n" ); document.write( "\"N=10x%2By\"
\n" ); document.write( "We can create two equations from what's given,
\n" ); document.write( "\"x%2By=11\"
\n" ); document.write( "\"10y%2Bx=45%2BN=45%2B10x%2By\"
\n" ); document.write( "So,
\n" ); document.write( "\"x%2By=11\"
\n" ); document.write( "\"9y-9x=45\"
\n" ); document.write( "Multiply the 1st eqn by 9 and add it to the second to get,
\n" ); document.write( "\"x%2By=11\"
\n" ); document.write( "\"18y=144\"
\n" ); document.write( "Divide the second by 9 to get y=8. Then, we have
\n" ); document.write( "\"x%2B8=11\"
\n" ); document.write( "So,
\n" ); document.write( "\"x=3\"
\n" ); document.write( "So, the original number was 38.
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