Sum of two integers:
To find the other integer when the sum of two integers is given, we can use the formula:

Other integer = Sum of the integers - Given integer

Giving values:
Let's assign the given integer as 170 and the sum of the integers as -13.

Given integer = 170
Sum of the integers = -13

Calculating the other integer:
Using the formula, we can calculate the other integer:

Other integer = -13 - 170
Other integer = -183

Therefore, the other integer is -183.

Explanation:
When two integers are added, the result is called the sum. In this case, the sum of the integers is -13. We are given one of the integers as 170 and we need to find the other integer.

To find the other integer, we can subtract the given integer from the sum of the integers using the formula mentioned above. Subtracting 170 from -13, we get -183 as the value of the other integer.

Example:
Let's check if our answer is correct by adding the two integers:

170 + (-183) = -13

As we can see, the sum of the integers is indeed -13, which confirms that our answer is correct.

Conclusion:
The other integer, when the sum of two integers is -13 and one of the integers is 170, is -183.