3n-81=9

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Solution for 3n-81=9 equation: 


Simplifying
3n + -81 = 9

Reorder the terms:
-81 + 3n = 9

Solving
-81 + 3n = 9

Solving for variable 'n'.

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

Add '81' to each side of the equation.
-81 + 81 + 3n = 9 + 81

Combine like terms: -81 + 81 = 0
0 + 3n = 9 + 81
3n = 9 + 81

Combine like terms: 9 + 81 = 90
3n = 90

Divide each side by '3'.
n = 30

Simplifying
n = 30

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