n+5+n=12

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Solution for n+5+n=12 equation: 


Simplifying
n + 5 + n = 12

Reorder the terms:
5 + n + n = 12

Combine like terms: n + n = 2n
5 + 2n = 12

Solving
5 + 2n = 12

Solving for variable 'n'.

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

Add '-5' to each side of the equation.
5 + -5 + 2n = 12 + -5

Combine like terms: 5 + -5 = 0
0 + 2n = 12 + -5
2n = 12 + -5

Combine like terms: 12 + -5 = 7
2n = 7

Divide each side by '2'.
n = 3.5

Simplifying
n = 3.5

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