Predict: I predict that this question is going to be about working backwards to find a given value.
Read: I think of a number, divide it by 2 and then add 12. If the result is 20, what was the original number?
BIG Question: What was the original number?
Solution. We have to work backwards in this problem. Firstly, we have to minus 12 so that the answer is 8. Then we times 8 by 2 to get our answer, 16. To be sure, you can check if it makes sense.