(3n-9)2=15

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Solution for (3n-9)2=15 equation:


Simplifying
(3n + -9) * 2 = 15

Reorder the terms:
(-9 + 3n) * 2 = 15

Reorder the terms for easier multiplication:
2(-9 + 3n) = 15
(-9 * 2 + 3n * 2) = 15
(-18 + 6n) = 15

Solving
-18 + 6n = 15

Solving for variable 'n'.

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

Add '18' to each side of the equation.
-18 + 18 + 6n = 15 + 18

Combine like terms: -18 + 18 = 0
0 + 6n = 15 + 18
6n = 15 + 18

Combine like terms: 15 + 18 = 33
6n = 33

Divide each side by '6'.
n = 5.5

Simplifying
n = 5.5

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