n+2n+3=18

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Solution for n+2n+3=18 equation: 


Simplifying
n + 2n + 3 = 18

Reorder the terms:
3 + n + 2n = 18

Combine like terms: n + 2n = 3n
3 + 3n = 18

Solving
3 + 3n = 18

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 = 18 + -3

Combine like terms: 3 + -3 = 0
0 + 3n = 18 + -3
3n = 18 + -3

Combine like terms: 18 + -3 = 15
3n = 15

Divide each side by '3'.
n = 5

Simplifying
n = 5

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