3n+4n=12+n

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Solution for 3n+4n=12+n equation: 


Simplifying
3n + 4n = 12 + n

Combine like terms: 3n + 4n = 7n
7n = 12 + n

Solving
7n = 12 + n

Solving for variable 'n'.

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

Add '-1n' to each side of the equation.
7n + -1n = 12 + n + -1n

Combine like terms: 7n + -1n = 6n
6n = 12 + n + -1n

Combine like terms: n + -1n = 0
6n = 12 + 0
6n = 12

Divide each side by '6'.
n = 2

Simplifying
n = 2

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