[-2n-1]=7

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Solution for [-2n-1]=7 equation: 


Simplifying
[-2n + -1] = 7

Reorder the terms:
[-1 + -2n] = 7

Remove brackets around [-1 + -2n]
-1 + -2n = 7

Solving
-1 + -2n = 7

Solving for variable 'n'.

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

Add '1' to each side of the equation.
-1 + 1 + -2n = 7 + 1

Combine like terms: -1 + 1 = 0
0 + -2n = 7 + 1
-2n = 7 + 1

Combine like terms: 7 + 1 = 8
-2n = 8

Divide each side by '-2'.
n = -4

Simplifying
n = -4

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