9+(n+8)=20

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Solution for 9+(n+8)=20 equation: 


Simplifying
9 + (n + 8) = 20

Reorder the terms:
9 + (8 + n) = 20

Remove parenthesis around (8 + n)
9 + 8 + n = 20

Combine like terms: 9 + 8 = 17
17 + n = 20

Solving
17 + n = 20

Solving for variable 'n'.

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

Add '-17' to each side of the equation.
17 + -17 + n = 20 + -17

Combine like terms: 17 + -17 = 0
0 + n = 20 + -17
n = 20 + -17

Combine like terms: 20 + -17 = 3
n = 3

Simplifying
n = 3

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