3n+n+2=12

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Solution for 3n+n+2=12 equation: 


Simplifying
3n + n + 2 = 12

Reorder the terms:
2 + 3n + n = 12

Combine like terms: 3n + n = 4n
2 + 4n = 12

Solving
2 + 4n = 12

Solving for variable 'n'.

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

Add '-2' to each side of the equation.
2 + -2 + 4n = 12 + -2

Combine like terms: 2 + -2 = 0
0 + 4n = 12 + -2
4n = 12 + -2

Combine like terms: 12 + -2 = 10
4n = 10

Divide each side by '4'.
n = 2.5

Simplifying
n = 2.5

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