n+(3n+4)+(4n-9)=67

Solution for n+(3n+4)+(4n-9)=67 equation:

Simplifying
n + (3n + 4) + (4n + -9) = 67

Reorder the terms:
n + (4 + 3n) + (4n + -9) = 67

Remove parenthesis around (4 + 3n)
n + 4 + 3n + (4n + -9) = 67

Reorder the terms:
n + 4 + 3n + (-9 + 4n) = 67

Remove parenthesis around (-9 + 4n)
n + 4 + 3n + -9 + 4n = 67

Reorder the terms:
4 + -9 + n + 3n + 4n = 67

Combine like terms: 4 + -9 = -5
-5 + n + 3n + 4n = 67

Combine like terms: n + 3n = 4n
-5 + 4n + 4n = 67

Combine like terms: 4n + 4n = 8n
-5 + 8n = 67

Solving
-5 + 8n = 67

Solving for variable 'n'.

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

Add '5' to each side of the equation.
-5 + 5 + 8n = 67 + 5

Combine like terms: -5 + 5 = 0
0 + 8n = 67 + 5
8n = 67 + 5

Combine like terms: 67 + 5 = 72
8n = 72

Divide each side by '8'.
n = 9

Simplifying
n = 9