We are required to find the sum of (n + 8) + (n - 12)
- Sum of numbers means the addition (+) of numbers.
The sum of (n + 8) + (n - 12) is 2n - 4
Given:
(n + 8) + (n - 12)
open parenthesis
n + 8 + n - 12
collect like terms
n + n + 8 - 12
2n - 4
Therefore, the sum of (n + 8) + (n - 12) is 2n - 4
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