18=-(n+1)

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Solution for 18=-(n+1) equation:


Simplifying
18 = -1(n + 1)

Reorder the terms:
18 = -1(1 + n)
18 = (1 * -1 + n * -1)
18 = (-1 + -1n)

Solving
18 = -1 + -1n

Solving for variable 'n'.

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

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

Combine like terms: -1n + n = 0
18 + n = -1 + 0
18 + n = -1

Add '-18' to each side of the equation.
18 + -18 + n = -1 + -18

Combine like terms: 18 + -18 = 0
0 + n = -1 + -18
n = -1 + -18

Combine like terms: -1 + -18 = -19
n = -19

Simplifying
n = -19

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