-3+18=-(-n-6)

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Solution for -3+18=-(-n-6) equation:


Simplifying
-3 + 18 = -1(-1n + -6)

Combine like terms: -3 + 18 = 15
15 = -1(-1n + -6)

Reorder the terms:
15 = -1(-6 + -1n)
15 = (-6 * -1 + -1n * -1)
15 = (6 + 1n)

Solving
15 = 6 + 1n

Solving for variable 'n'.

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

Add '-1n' to each side of the equation.
15 + -1n = 6 + 1n + -1n

Combine like terms: 1n + -1n = 0
15 + -1n = 6 + 0
15 + -1n = 6

Add '-15' to each side of the equation.
15 + -15 + -1n = 6 + -15

Combine like terms: 15 + -15 = 0
0 + -1n = 6 + -15
-1n = 6 + -15

Combine like terms: 6 + -15 = -9
-1n = -9

Divide each side by '-1'.
n = 9

Simplifying
n = 9

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