Question 232261
Think of a number.
Add 7.
Double the result.
Subtract 8.
Double the result.
Add 12.
Divide by 4.
Subtract 6.
Your answer will be the original number. Explain how this trick works.
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Steps in order:
n
n+7
2n+14
2n+6
4n+12
4n+24
n+6
n