Question

What is

(n+8) + (n−12)

Answer 1

2n-4

Explanation:

add like terms. n+n=2n 8+-12=-4

2n-4

Answer 2

2n - 4.

Explanation:

(n+8) + (n−12)

= n + 8 + n - 12

= n + n + 8 - 12

= 2n - 4.