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How is the following equation is correct?
$29$ - $1$ = $30$

Hint-

Think Ancient.

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I think I've got it :

If I write your equation with roman numerals, it gives : XXIX - I = XXX. Which is true if we consider - as without.

Got to say the hint helps a lot

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  • $\begingroup$ Beat me by only 52 seconds... Ugh, good job anyways! :) $\endgroup$ May 10 at 12:25
  • $\begingroup$ Don't worry at least you are right. $\endgroup$ May 10 at 14:35
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If you write out the equation in Roman numerals, you get XXIX - I = XXX, which makes sense when you interpret it as a word equation.

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