Question

Find the sum. (n+8)+(n−12) =

Answer 1

Your answer is:
2n-4

Step by step:
(n+8)+(n-12)
Rewrite and remove the parentheses

n+8+n-12
Calculate

Therefore your solution is:
2n-4

Answer 2

n=2

Reorder terms:

(8+n)+(n-12)=0

Remover first parentheses :

8+n+(n-12)=0

Reorder (again):

8-12+n+n=0

Simplify:

-4+2n=0

Add 4 to both sides:

2n=4

Divide and you’re done!

n=2