Please explain adding and subtracting Integers

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I am trying to start again with math, giving it a second shot after i completly gave up on math for about 10y. I looked up multiple cheet sheets and rules, but they all say different things. My problem especially +29 – +59. The rule thing i got from the internet says + – + = larger integer’s sign, but then another tutorial said well if you reverse + and -, then you can get the answer that way, but they are 2 different answers. And i’m confused too about what, like what’s the point of doing the operations if we can just change whatever symbols we want, but then we do but nothing matches as the result so i’m just confused.

I just don’t get it, none of the rules match and in my head none of it even makes any sense. So i feel like i need to memorize the rules, but there are no rules. Pls help, i started crying due to the fustration because now i remembered why i despised math so much.

Update: I started being able to complete operations, even of 5 in a row. Thank you all! Ended up dropping tje unecessary + and just – – = + idk, but i’m doing it.

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19 Answers

Anonymous 0 Comments

That sounds overly-complicated and poorly taught. Overly-complicated and poorly taught explanations are a big reason why students hate their math classes in school, which is a shame imo.

When you say that using whatever rule, it’s possible to get different answers, that’s ambiguity, which ideally we want to avoid when trying to learn math, so I’m going to rewrite your problem. The extra plus signs are a bit confusing to read, and it might be easier to add instead of subtract. Instead of

+29 – +59

it might help to think about it as

29 + (-59)

I’ve TA’d math courses, and it’s much easier to explain things through a dialogue, as opposed to just typing out explanations. If you’re really interested in understanding math, I’d encourage you to spend a short amount of time thinking about how you would answer the rewritten problem and then ask any follow up questions that come to mind

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