n+n+3n=45

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Solution for n+n+3n=45 equation: 


Simplifying
n + n + 3n = 45

Combine like terms: n + n = 2n
2n + 3n = 45

Combine like terms: 2n + 3n = 5n
5n = 45

Solving
5n = 45

Solving for variable 'n'.

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

Divide each side by '5'.
n = 9

Simplifying
n = 9

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