9(n-9)=81

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Solution for 9(n-9)=81 equation: 


Simplifying
9(n + -9) = 81

Reorder the terms:
9(-9 + n) = 81
(-9 * 9 + n * 9) = 81
(-81 + 9n) = 81

Solving
-81 + 9n = 81

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 + 9n = 81 + 81

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

Combine like terms: 81 + 81 = 162
9n = 162

Divide each side by '9'.
n = 18

Simplifying
n = 18

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