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

Hey OP, you need to realise is that the “negative sign” is different from the “subtraction operator”. They’re the same symbol, but they’re actually different things. A negative sign in front of a number means it’s a negative number. A subtraction operator between two numbers is telling you to subtract one number from the other. Both are denoted by the symbol – but you need to realise what you’re dealing with.

Think of it in terms of money. The sign in front of the number denotes whether it’s a credit or a debt.

If there’s a positive+ sign, its a credit (someone gives you money). +9 means a credit of 9.

If there’s a negative- sign, it’s a debt (you have to lose some money). -8 means a debt of 8.

So, you just need to think about the total amount of money you’ll get in these situations:

– Credit plus credit
– Credit subtract credit
– Debt plus debt
– Debt subtract debt
– Credit plus debt
– Credit subtract debt
– Debt plus credit
– Debt subtract credit.

Give it a go! Thinking in terms of money often helps adults understand more abstract mathematical concepts.

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