(n+4)*9=81

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Solution for (n+4)*9=81 equation:


Simplifying
(n + 4) * 9 = 81

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

Reorder the terms for easier multiplication:
9(4 + n) = 81
(4 * 9 + n * 9) = 81
(36 + 9n) = 81

Solving
36 + 9n = 81

Solving for variable 'n'.

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

Add '-36' to each side of the equation.
36 + -36 + 9n = 81 + -36

Combine like terms: 36 + -36 = 0
0 + 9n = 81 + -36
9n = 81 + -36

Combine like terms: 81 + -36 = 45
9n = 45

Divide each side by '9'.
n = 5

Simplifying
n = 5

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