Asked by Mary

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.

Answered by Ms. Sue
Your subject is math.

Answered by Reiny
Think of a number.... x
Add 7.... x+7
Double the result..... 2x+14
Subtract 8....2x+6
Double the result.... 4x + 12
Add 12. 4x + 24
Divide by 4.... x + 6
Subtract 6.... x
Answered by La
6
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