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General rule for adding numbers

Two integers with the same signs

=> Once 2 integers has the same sign, then add.

For example

5 + 3 = 8 ( 5 and 3 are both positive numbers)

-5 + (-3) = -8 (5 and 3 are both negative number, thus we added the 2 numbers)


Two integers with different signs

=> When 2 integers has different sign, then do subtraction

For example

-5 + 3  (5 and 3 has different signs)

  • 5 + 3 = 2

Two integers that vary in sign

=> When 2 integers vary in sign, then it will depend on the operator

For example

5 + (-3) (5 and 3 has different signs, but the process will vary with the
operator and number sign)

When positive and negative = negative

5 – 3 = 2






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