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If there are two positives, add as usual. If there are two positives being added together then you add and if have one positive and one negative the it would be a positive.
If there is a negative and a positive, subtract the negative from the positive. For instance, -6 + +5 = -1 because there are 6 negatives but only 5 positives. that means you are down by 1 extra negative, so it's -1.
If there are 2 negatives and you combine them, just add like positives! For example -10 + -10 is -20! And to subtract, a negative negative is a positive, so it would be -10 - (-10), and that now is -10 + 10, so it is 0. 10-5= 5 because 2 positives are normal addition.
Or, if there are more positives than negatives, do normal subtraction! If you do -3 + 10, do 10-3, which is +7. Also, when you are adding the same numbers but different integers you will always get the answer 0!
To multiply, - x + = -, - x - =+, + x + = +! -3 x 3 = -9, -3 x -3 = +9, and 3 x 3 = 9! It's the same for division.
Yeah! For a division example, -9/3 =3
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