(n+9)+2n=84

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Solution for (n+9)+2n=84 equation:


Simplifying
(n + 9) + 2n = 84

Reorder the terms:
(9 + n) + 2n = 84

Remove parenthesis around (9 + n)
9 + n + 2n = 84

Combine like terms: n + 2n = 3n
9 + 3n = 84

Solving
9 + 3n = 84

Solving for variable 'n'.

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

Add '-9' to each side of the equation.
9 + -9 + 3n = 84 + -9

Combine like terms: 9 + -9 = 0
0 + 3n = 84 + -9
3n = 84 + -9

Combine like terms: 84 + -9 = 75
3n = 75

Divide each side by '3'.
n = 25

Simplifying
n = 25

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