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# Matchstick Equations

21 replies to this topic

### #1 rookie1ja

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Posted 31 March 2007 - 11:29 PM

Matchstick Equations - Back to the Matchstick Puzzles
Try to rectify a mistake by moving a single matchstick, to get the correct equation.
(Edit: you can not place any matchstick diagonally over the equals sign)

The following equation is made of 11 matches:
XI - V = IV (more solutions)

The following equation is made of 11 matches:
X + V = IV (more solutions)

The following equation is made of 10 matches:
L + L = L (more solutions)

The following equation is made of 12 matches:
VI = IV - III (more solutions)

The following equation is made of 14 matches:
XIV - V = XX

The following equation is made of 11 matches:
IX - IX = V

The following equation is made of 12 matches:
X = VIII - II

The following equation is made of 7 matches:
VII = I

This old topic is locked since it was answered many times. You can check solution in the Spoiler below.
Pls visit New Puzzles section to see always fresh brain teasers.

Spoiler for Solution

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### #2 Tap_521

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Posted 24 May 2007 - 08:19 PM

What? Confused!
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### #3 mrmogul321

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Posted 28 June 2007 - 06:56 PM

Hah, one thing you could do, is pick up a random match, and place it diagonally over the equals sign. Making the statement read, XI (doesnt equal) X.
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### #4 townsfolk

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Posted 02 July 2007 - 05:29 AM

1. move the I from XI over to after the V.
XI - V = IV
becomes:
X - VI = IV (10 - 6 = 4)

2. Move the I from the + to make it a -, and move it to after the V.
X + V = IV
becomes:
X - VI = IV (10 - 6 = 4)
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### #5 etanhappy

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Posted 12 July 2007 - 10:17 PM

Haha. square root of 1. Ha ha
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### #6 gutterpup

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Posted 28 July 2007 - 01:12 PM

Couldn't L + L = L also be changed with a movement of the plus sign matchstick to be L = L = L

and @ mogul, I thought of that same thing
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### #7 twilly

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Posted 15 August 2007 - 01:39 AM

i say we light all the matches and watch them burn
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### #8 nosmofui

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Posted 18 August 2007 - 01:55 AM

L+L=L

L+I=L I
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### #9 MCBergsma

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Posted 30 August 2007 - 05:42 PM

For the last one, why not
From:
VII = I

To:
II-I = I

?
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### #10 tandebauer

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Posted 06 September 2007 - 09:34 PM

The last one can not be solved
ll-l=l
that moves to many match sticks.
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