(-9) + (-4) =
-13
To add two negative integers, we simply add the absolute values of the numbers and use the negative sign as the answer.
So, adding -9 and -4:
|-9| + |-4| = 9 + 4 = 13
Since both numbers are negative, we use the negative sign as the answer:
-9 + (-4) = -13
Therefore, (-9) + (-4) = -13.
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