3+n+2n=9

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Solution for 3+n+2n=9 equation: 


Simplifying
3 + n + 2n = 9

Combine like terms: n + 2n = 3n
3 + 3n = 9

Solving
3 + 3n = 9

Solving for variable 'n'.

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

Add '-3' to each side of the equation.
3 + -3 + 3n = 9 + -3

Combine like terms: 3 + -3 = 0
0 + 3n = 9 + -3
3n = 9 + -3

Combine like terms: 9 + -3 = 6
3n = 6

Divide each side by '3'.
n = 2

Simplifying
n = 2

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