Basically, in the addition ones, it all depends on which number is larger. The bigger number’s sign is the product’s sign.

And multiplying is basically this:
Positive x negative= negative product.
Negative x Positive= negative product.
Negative x negative= Positive product.

Subtracting works different, though. If you subtract a negative from either positive or negative, you ADD the numbers. Subtract positive from negative, and just make it go further down the negative scale.

just stares
Errgh, I remember when I sat there glaring at the explanation page and tried to memorize the rules… still gives me a bad taste in the mouth. I hope you’ll manage better than I did, Chris

I’m taking Math right now as well, heh. If you have any other questions about it, feel free to ask. Heck, it would make me more confident in my abilities if I could help someone out. 8)

memorizing rules? this negative+negative, negative-negative stuff is easy. If you add a positive number to a positive number, of course it will be positive. It’s like, if I have some apples, and I get some more applies, do I have more than 0 apples?

For some reason, Val made prefect sense. Thank Val. Also, wow, what a nice little trick SE.Thankies! Everyone else helped clear up the problem too! Thank you everyone!

Originally posted by Valkyrie Esker Um, Seraphim? The parentheses don’t matter, subtracting a negative from a negative will always end in adding instead.

I’m sorry, I phrased that uncorrectly. I’d explain what I meant but I’m too tired to think about math:P

Just a heads up, when people talk about integers being the absolute basis for anything you do in math from this point on - they ain’t lying. Integers are a very important aspect of all higher level math, and it’s imperative you learn them well.

Actually integers aren’t that important to math, symbols are. Higher level math is based completely on symbol manipulation, which is all numbers are. And calculus and such deals with more continuous numbers, like real and complex numbers. Integers are just important in number theory.

If anyone says integers are an absolute basis for anything you do in math, they are lying. Symbols are the absolute basis for everything in math. Integers are just some conveniently defined symbols.

Neg - Neg = If 1st is larger (number wise 3 > 2), Neg; if 2nd is larger, Pos
Neg - Pos = Neg
Pos - Neg = if Pos is bigger # than Neg, Pos; if Neg bigger, Neg