How is this correct?

Question

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

Hint-

Think Ancient.

score 6 · Accepted Answer · answered May 10 '21 at 12:23

6

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

answered May 10 '21 at 12:23

Ubikuity

Beat me by only 52 seconds... Ugh, good job anyways! :) – TakingNotes May 10 '21 at 12:25
Don't worry at least you are right. – Mritunjay Kumar May 10 '21 at 14:35

score 5 · Answer 2 · answered May 10 '21 at 12:24

5

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.

answered May 10 '21 at 12:24

TakingNotes

2 Answers2