n+3=-15

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Solution for n+3=-15 equation: 


Simplifying
n + 3 = -15

Reorder the terms:
3 + n = -15

Solving
3 + n = -15

Solving for variable 'n'.

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

Add '-3' to each side of the equation.
3 + -3 + n = -15 + -3

Combine like terms: 3 + -3 = 0
0 + n = -15 + -3
n = -15 + -3

Combine like terms: -15 + -3 = -18
n = -18

Simplifying
n = -18

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