-81=3(8+5n)

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Solution for -81=3(8+5n) equation:


Simplifying
-81 = 3(8 + 5n)
-81 = (8 * 3 + 5n * 3)
-81 = (24 + 15n)

Solving
-81 = 24 + 15n

Solving for variable 'n'.

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

Add '-15n' to each side of the equation.
-81 + -15n = 24 + 15n + -15n

Combine like terms: 15n + -15n = 0
-81 + -15n = 24 + 0
-81 + -15n = 24

Add '81' to each side of the equation.
-81 + 81 + -15n = 24 + 81

Combine like terms: -81 + 81 = 0
0 + -15n = 24 + 81
-15n = 24 + 81

Combine like terms: 24 + 81 = 105
-15n = 105

Divide each side by '-15'.
n = -7

Simplifying
n = -7

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