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Homework Help: Algebra 1b - System of equations

  1. Mar 9, 2010 #1
    1. The problem statement, all variables and given/known data

    The sum of the digits of a two-digit number is 7. When the digits are reversed, the number is increased by 27. Find the number

    I Don't understand when they say the digits are reversed, i have done these problems many times before. but i don't understand the wording...

    2. Relevant equations

    3. The attempt at a solution

    I need more info to solve....
  2. jcsd
  3. Mar 9, 2010 #2


    User Avatar

    Staff: Mentor

    Yeah, that is confusing, but I think I see what they are asking.

    Say the original number was 43, so the sum of 4+3 = 7.

    Now reverse the two digits to make 34. Well, that decreased the value of the number by 9, so 43 is not the right answer. But you see how it goes now?
  4. Mar 9, 2010 #3
    oh i see i was looking at it completely wrong I really appreciate it
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