CPM Homework Help : MC2 Problem 1-66

Alice said, " I am thinking of a number. If you triple my number and subtract $11$ , you get my number plus $33$ . What's my number?" Find Alice's number. Show how you know your answer is correct.

Hint 1:

Use the Guess and Check method.

Help:

More Help:

Use different values where the question marks are until you get the right answer.

Hint 2:

Alice's number is between $20$ and $30$ .