document.write( "Question 190869This question is from textbook Alegbra Structure and Method
\n" ); document.write( ": When the digits of a two-digits number are reversed, the new number is 36 more than the original number. The units digits is twice the tens digit. What is the original number? \n" ); document.write( "
Algebra.Com's Answer #143335 by ankor@dixie-net.com(22740)\"\" \"About 
You can put this solution on YOUR website!
When the digits of a two-digits number are reversed, the new number is 36 more
\n" ); document.write( " than the original number. The units digits is twice the tens digit.
\n" ); document.write( " What is the original number?
\n" ); document.write( ":
\n" ); document.write( "Let x = original 10's digit
\n" ); document.write( "Let y = original units
\n" ); document.write( "10x + y = original number
\n" ); document.write( ":
\n" ); document.write( "\"When the digits of a two-digits number are reversed, the new number is 36 more than the original number.\"
\n" ); document.write( "10y + x = 10x + y + 36
\n" ); document.write( "10y - y = 10x - x = 36
\n" ); document.write( "9y = 9x + 36
\n" ); document.write( "Simplify divide by 9
\n" ); document.write( "y = x + 4
\n" ); document.write( ":
\n" ); document.write( "\" The units digits is twice the tens digit.\"
\n" ); document.write( "y = 2x
\n" ); document.write( ":
\n" ); document.write( "Substitute;
\n" ); document.write( "2x = x + 4
\n" ); document.write( "x = 4, then y = 8
\n" ); document.write( ";
\n" ); document.write( " What is the original number? It's 48
\n" ); document.write( ";
\n" ); document.write( ";
\n" ); document.write( "Check solution 84 = 48 + 36 \n" ); document.write( "
\n" );