How to Subtract By Adding

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[redkb]

You took an entire computer science lecture and turned it into a 3 min video! Nice!

[knollie]

This is exactly what I need to know at 3 am.

[Burt]

"How to subtract by Adding"
-proceeds to do a series of subtractions.

[coldspade]

20 seconds into the video and I would rather just subtract

[DanTheStripe]

Video length = 3:14

Pilluminati confirmed.

[hayleydieckman]

Ready.... i know how to before the video starts....


*clears throat*

3+(-2)=1




Mind blown

[Waddellaw]

I add by adding and subtract by subtracting. Never fails.

[ihaveagun]

how the hell did anyone just stumble across this rule
what was he doing?

[fjoa]

wow math is so flexible yet so restrictive. Like a rubber band choking a kitten.

[TheCreepyLuck]

I've been trying to explain how I subtract to my mom for years, this is gold for me

[woodfur]

Um, but Henry, 2 + 2 still doesn't equal 1.

[YungPnut]

This is much more relevant if you know how computers do it. Lol

[Czesnek]

I have no idea what is going on in this video.

[Kanglar]

After an entire semester of digital logic class, this 3 minute video finally got me to understand the actual reasoning behind 2s compliment :)

[sporkafife]

How do you subtract by adding? Okay, here we go... first... DO A LOT OF SUBTRACTING :D But it's only single digit subtracting, so it's nicer :P

[SlickNickP]

0:17 I don’t want to carry over, so let’s start by subtracting everything from nine, which is effectively the same thing but more steps

[EnderCrypt]

yeah, but you still have to substract, lel

[Dragonking]

So if I had 999, 995 dollars, five more dollars and I'd end up with 000, 000 dollars?

[Liamv]

This is basically me in my programming class at uni.

Just like, lolwut

[israellai]

Ah reminds me of the good old computer science lessons in high school. Add and ignore overflow.