3n+2n+6=81

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Solution for 3n+2n+6=81 equation: 


Simplifying
3n + 2n + 6 = 81

Reorder the terms:
6 + 3n + 2n = 81

Combine like terms: 3n + 2n = 5n
6 + 5n = 81

Solving
6 + 5n = 81

Solving for variable 'n'.

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

Add '-6' to each side of the equation.
6 + -6 + 5n = 81 + -6

Combine like terms: 6 + -6 = 0
0 + 5n = 81 + -6
5n = 81 + -6

Combine like terms: 81 + -6 = 75
5n = 75

Divide each side by '5'.
n = 15

Simplifying
n = 15

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