-81=-4n-1

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Solution for -81=-4n-1 equation:


Simplifying
-81 = -4n + -1

Reorder the terms:
-81 = -1 + -4n

Solving
-81 = -1 + -4n

Solving for variable 'n'.

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

Add '4n' to each side of the equation.
-81 + 4n = -1 + -4n + 4n

Combine like terms: -4n + 4n = 0
-81 + 4n = -1 + 0
-81 + 4n = -1

Add '81' to each side of the equation.
-81 + 81 + 4n = -1 + 81

Combine like terms: -81 + 81 = 0
0 + 4n = -1 + 81
4n = -1 + 81

Combine like terms: -1 + 81 = 80
4n = 80

Divide each side by '4'.
n = 20

Simplifying
n = 20

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