Final answer:
The additive inverse of the integer -147 is 147. Changing the sign of the original number provides the additive inverse, ensuring their sum is zero.
Step-by-step explanation:
The additive inverse of an integer is the number that, when added to the original number, results in a sum of zero. For the given integer -147, the additive inverse is 147. To find the additive inverse of any integer, simply change the sign of the number to its opposite. If the integer is negative, the additive inverse is positive, and if the integer is positive, the additive inverse is negative. For example, the additive inverse of -147 is 147, because -147 + 147 = 0.