20=2-(n+9)

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Solution for 20=2-(n+9) equation:


Simplifying
20 = 2 + -1(n + 9)

Reorder the terms:
20 = 2 + -1(9 + n)
20 = 2 + (9 * -1 + n * -1)
20 = 2 + (-9 + -1n)

Combine like terms: 2 + -9 = -7
20 = -7 + -1n

Solving
20 = -7 + -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.
20 + n = -7 + -1n + n

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

Add '-20' to each side of the equation.
20 + -20 + n = -7 + -20

Combine like terms: 20 + -20 = 0
0 + n = -7 + -20
n = -7 + -20

Combine like terms: -7 + -20 = -27
n = -27

Simplifying
n = -27

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