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

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Solution for =(n+8)+(n-12) equation: 


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

Reorder the terms:
0 = (8 + n) + (n + -12)

Remove parenthesis around (8 + n)
0 = 8 + n + (n + -12)

Reorder the terms:
0 = 8 + n + (-12 + n)

Remove parenthesis around (-12 + n)
0 = 8 + n + -12 + n

Reorder the terms:
0 = 8 + -12 + n + n

Combine like terms: 8 + -12 = -4
0 = -4 + n + n

Combine like terms: n + n = 2n
0 = -4 + 2n

Solving
0 = -4 + 2n

Solving for variable 'n'.

Move all terms containing n to the left, all other terms to the right.

Add '-2n' to each side of the equation.
0 + -2n = -4 + 2n + -2n
Remove the zero:
-2n = -4 + 2n + -2n

Combine like terms: 2n + -2n = 0
-2n = -4 + 0
-2n = -4

Divide each side by '-2'.
n = 2

Simplifying
n = 2

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