X – V = IV

by Serhiy Grabarchuk Jr

Solution Step 0/0

The equation with Roman numerals is not quite correct.

It is enough to move two matchsticks to reach a correct equation.

What are those two matchsticks? Note: though there is a matchstick overlapping in initial position (number X), any new overlapping is not allowed.


The solution is shown in the diagram.

Check 1 horizontal & 1 vertical
Check 1 inclined & 1 vertical
Check 2 horizontal
Check 2 inclined