document.write( "Question 229991: The sum of the digits of a two digit number is 12. (So, I am thinking the problem for that statement would be x + y = 12)\r
\n" ); document.write( "\n" ); document.write( "The number is 13 times the tens digit. Find the number.\r
\n" ); document.write( "\n" ); document.write( "I cannot for the life of me figure out the second equation. If I am given the equation, I can work the problem, but I can't seem to understand anything other than 13(x) = z. (But if I use that, I will then have 3 variables in a systems of equations problem.)\r
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\n" ); document.write( "\n" ); document.write( "Marie \n" ); document.write( "
Algebra.Com's Answer #170401 by ankor@dixie-net.com(22740)\"\" \"About 
You can put this solution on YOUR website!
The sum of the digits of a two digit number is 12. (So, I am thinking the problem for that statement would be x + y = 12)
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\n" ); document.write( "That's right, but also we know: x = 10's digit and y = units; therefore:
\n" ); document.write( "the number = 10x + y
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\n" ); document.write( "The number is 13 times the tens digit. Find the number.
\n" ); document.write( "10x + y = 13x
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\n" ); document.write( "Now you can substitute (12-x) for y and solve for x, then find y
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\n" ); document.write( "you should get a number of 39
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